Dossier - Cosmetic active ingredients

Retinol: the complete file of the 11 serums on the market.

The most documented topical anti-aging active in dermatology - also the most misused. Eleven serums analyzed by molecular family, from INCI formulation to real-life feedback.

Author Dr Sylvain David
Expertise Independent cosmetic analysis
Sera analyzed 11 references - 3 families
Compiled opinions 147 BeautyDecoded returns
Analyze my serum in the app
Score out of 100 - Customized for your skin
11
In-depth serum analysis
3
Molecular families
147
Compiled user reviews
Mechanisms of action

What it says literature.

Topical retinoids act via binding to nuclear receptors RAR and RXR, which regulate the expression of genes involved in keratinocyte proliferation and differentiation.

01

Collagen stimulation

At dermal level, retinoids stimulate type I collagen synthesis and repair damaged support fibers.

02

MMP inhibition

Blocking of matrix metalloproteinases (MMP-1, MMP-3) responsible for dermal collagen degradation.

03

Cell renewal

Acceleration of epidermal keratinocyte turnover - improved texture, reduced surface wrinkles.

Note from Dr Sylvain David

«Retinol is the active ingredient I include in my anti-ageing routines after the age of 30. Its effectiveness depends entirely on the regularity and progressiveness of its introduction. A poorly introduced retinoid produces unnecessary irritation - with no additional clinical benefit.»

The literature documents significant efficacy on surface wrinkles, pigment heterogeneity and skin texture after 12 to 24 weeks of regular use.

INCI reading guide

The waterfall of conversion.

Not all forms of retinoids are created equal. Before reaching the active form (retinoic acid), the molecule sometimes has to pass through several enzymatic stages - each of which reduces the final concentration available.

Retinyl palmitate → Retinol → Retinal → Retinoic acid

HPR (Hydroxypinacolone Retinoate) binds directly to RAR receptors, bypassing this chain.

Shape Steps Relative efficiency Tolerance Ideal profile
Retinol 2 steps Historic cosmetics reference Moderate depending on concentration Large, from 0.3 %
Retinal (retinaldehyde) 1 step Very high - close to tretinoin Better than retinol Intermediate to advanced
HPR 0 - direct link to RAR Good - no conversion Very good Beginners, reactive skin
Retinyl palmitate 3 steps Moderate Very good Highly reactive skin
⚠️
Photosensitivity. Retinol is photosensitizing and photodegradable. It is used exclusively in the evening. The next morning, SPF 50 is mandatory. A bottle exposed to light or heat rapidly loses its activity.
Comparison table

The 11 sera analyzed, at a glance.

Before going into the details of each formulation, here's a complete mapping of the selection, classified by molecular family.

Retinol

Anti-Aging Night Care 0,3%

Nooance

Intermediates - balanced formula

0,3 %
Retinol

Clinical 1% Retinol Treatment

Paula's Choice

Confirmed - high concentration

1 %
Retinol

ACTIV RETINOL 0.5

Dermaceutic

Intermediaries - Pharmacy

0,5 %
Retinol

A-Lift bulb

SVR

Beginners to intermediate

0,3 %
Retinol

Retinol Serum 1% in Squalane

The Ordinary

Confirmed only

1 %
Retinol

Resurfacing Retinol Serum

CeraVe

Intermediates - ceramides

N.P.
Retinol

Retinol 0.3% + castor oil

Typology

Intermediaries - transparency

0,3 %
Retinal

Retinal 0.2% Emulsion

The Ordinary

Intermediates - most commented

0,2 %
Retinal

101 A-Game 10

Geek & Gorgeous

Beginners to intermediate

0,1 %
Retinal

Retinal Optimized Anti-Aging

Aroma-Zone

Beginners - low budget

N.P.
HPR

Granactive Retinoid 2% Emulsion

The Ordinary

Beginners - reactive skin

2 %
Part 01

Retinol

Historic cosmetic reference since the 1990s - 2 conversion stages - Tolerance inversely proportional to concentration.

Retinol is the most documented retinoid in cosmetology. The rule for gradual introduction is non-negotiable While retinol at 0.3 % is accessible to most profiles, retinol at 1 % requires acclimatization over several months. European regulations cap cosmetic retinol at 0,3 % since 2025 (SCCS notice).

Nooance

Anti-Aging Night Concentrate 0.3% Retinol

★★★★½ 4,38/5 (28 reviews BeautyDecoded)
🥇 N°1 - Retinol
INCI (extract) : AQUA, DIMETHICONE, NIACINAMIDE, PROPYLENE GLYCOL, ISODODECANE, GLYCERIN, ASCORBYL GLUCOSIDE, SIMMONDSIA CHINENSIS SEED OIL, CAPRYLIC/CAPRIC TRIGLYCERIDE, PANTHENOL, RETINOL...

Retinol at 0.3 % - the maximum concentration authorized in Europe - in a formula enriched with niacinamide, ascorbyl glucoside (a stable vitamin C derivative) and panthenol. The combination of niacinamide and retinol is well-documented for reducing irritation during the introductory phase. Top-of-the-range French brand. The bottle's dispensing system has been criticized by several users.

⚠️ Sensitivity verdict Potential moderate irritation at 0.3 %. The presence of niacinamide and panthenol mitigates this risk. Gradual introduction recommended.
User feedback
«Very pleasant product and above all effective. I have really noticed an improvement in my mature skin.»
«Very good night cream with retinol. Not much product is needed, absorbs quickly.»
«Great retinol cream, not overdosed so not too irritating. Great texture.»
Summary - the most extensive opinion database of the retinol selection. Well-balanced formula with regulatory concentration, enriched with synergistic active ingredients. A relevant option for intermediate profiles looking for a French retinol at 0.3 % with an enhanced tolerance profile.
Paula's Choice

Clinical 1% Retinol Treatment

★★★★★ 4,88/5 (30 reviews BeautyDecoded)
🥈 N°2 - Retinol 1 %
INCI (extract) : AQUA, DIMETHICONE, GLYCERIN, BUTYLENE GLYCOL, ISONONYL ISONONANOATE, DIMETHICONE CROSSPOLYMER, TETRAHEXYLDECYL ASCORBATE, RETINOL, CERAMIDE NG, PALMITOYL TETRAPEPTIDE-7, PALMITOYL HEXAPEPTIDE-12, SODIUM HYALURONATE, ALLANTOIN, TOCOPHERYL ACETATE...

Retinol at 1 % in an emulsion enriched with ceramides, three synthetic peptides, sodium hyaluronic acid, allantoin and a stable vitamin C derivative (tetrahexyldecyl ascorbate). The formula is designed to maximize efficacy while limiting irritation through the addition of repairing active ingredients. Creamy texture.

⛔ Sensitivity verdict Not suitable for sensitive skin at this concentration. Many users report significant irritation. To be reserved for confirmed retinol profiles.
User feedback
«Very good retinol whose results are visible quickly, but very irritating for sensitive skin despite the precautions taken.»
«I use it every night - no irritation.»
«It strongly dries out the skin despite the fact that I've been using retinol for 1 year.»
Summary - premium formula at 1 %, enriched with repairing active ingredients. A relevant option for confirmed retinol profiles seeking a well-supported, high-concentration formula. Not suitable for first-time retinoid users.
Dermaceutic

ACTIV RETINOL 0.5 - Anti-aging serum

★★★★★ 5,00/5 (5 BeautyDecoded reviews)
Dermo-pharmacy range
INCI (extract) : AQUA, DIGLYCERIN, TRIDECETH-9, ETHYLHEXYL METHOXYCRYLENE, PEG-40 HYDROGENATED CASTOR OIL, PANTHENOL, RETINOL, ASCORBYL TETRAISOPALMITATE, ASCORBYL PALMITATE, TOCOPHEROL, ALLANTOIN, CHOLESTEROL, SPHINGOLIPIDS...

Retinol at 0.5 % in a dermo-cosmetic formula enriched with panthenol, allantoin, cholesterol, sphingolipids and stabilized vitamin C derivatives. Available in pharmacies. Please note: European regulations have capped cosmetic retinol at 0.3 % in 2025 - this 0.5 % product may evolve.

⚠️ Sensitivity verdict Potential risk of irritation. The formula's repairing active ingredients reduce this risk. Gradual introduction recommended.
User feedback
«Great serum to start retinol. 1 night out of 2 at first, then every night.»
«After Geek & Gorgeous, The Ordinary, Paula's Choice - this retinol is my favorite. Effective and easy to find.»
«I started with this product 1 night out of 3. Progressive overall improvement - no more blemishes.»
Summary - balanced dermo-cosmetic formula, enriched with repairing active ingredients. A relevant option for intermediate profiles looking for a retinol that is supervised by pharmacies. Keep an eye on regulatory changes in concentration.
SVR Laboratory

A-Lift bulb

★★★½☆ 3,72/5 (9 reviews BeautyDecoded)
Available in pharmacies
INCI (extract) : AQUA, CAPRYLIC/CAPRIC TRIGLYCERIDE, PROPANEDIOL, NIACINAMIDE, BORON NITRIDE, SIMMONDSIA CHINENSIS SEED OIL, GLYCOLIPIDS, GLYCOSPHINGOLIPIDS, LECITHIN, PULLULAN, RETINOL, SCLEROTIUM GUM, TOCOPHEROL...

Retinol in an SVR dermo-cosmetic formula enriched with niacinamide, glycolipids, glycosphingolipids (barrier action), pullulan (tensing film-forming agent) and tocopherol. Free from denatured alcohol and phenoxyethanol - two points favorably noted by users. Pipette packaging criticized. Available in pharmacies.

⚠️ Sensitivity verdict Potential risk of irritation. Formula with repairing lipid actives reduces this risk. Gradual introduction recommended.
User feedback
«I chose this retinol for its price, accessibility, absence of phenoxyethanol and alcohol. I only regret the fragrance.»
«Pleasant scent and texture. Smoothed skin the next morning, pores diminished.»
«Very unpleasant smell. The pipette works very badly. No effect after 3 months of use.»
Summary - alcohol- and phenoxyethanol-free formula - an advantage for sensitive profiles. User opinions are divided on the perceived effectiveness and practicality of the packaging.
The Ordinary

Retinol Serum 1% in Squalane

★★★★☆ 4,27/5 (11 BeautyDecoded reviews)
Confirmed profiles only
INCI (extract) : SQUALANE, CAPRYLIC/CAPRIC TRIGLYCERIDE, SIMMONDSIA CHINENSIS SEED OIL, RETINOL, SOLANUM LYCOPERSICUM FRUIT EXTRACT, ROSMARINUS OFFICINALIS LEAF EXTRACT, HYDROXYMETHOXYPHENYL DECANONE, BHT

Anhydrous squalane-based formula. Retinol in 4th position at 1 %, enriched with tomato extract (antioxidant lycopene) and rosemary extract. The lipid base reduces irritation potential compared to aqueous formulas. Oily texture - slight shine after application.

⛔ Sensitivity verdict Not suitable for sensitive skin. To be reserved for experienced profiles who have tolerated retinol at lower concentrations for several months.
User feedback
«Oily texture - if you apply a moisturizer afterwards the skin becomes shiny.»
«After a year and a half, a friend said to me «you've gotten younger, what are you doing?» - I think it's quietly doing its job.»
Summary - High concentration, squalane base improves relative tolerance. Option for experienced profiles looking for an affordable retinol. The oily texture is a hindrance for combination to oily skin.
CeraVe

Resurfacing Retinol Serum

★★★★½ 4,40/5 (10 BeautyDecoded reviews)
Reinforced skin barrier
INCI (extract) : AQUA, PROPANEDIOL, DIMETHICONE, CETEARYL ETHYLHEXANOATE, NIACINAMIDE, HYDROGENATED LECITHIN, CERAMIDE NP, CERAMIDE AP, CERAMIDE EOP, RETINOL, SODIUM HYALURONATE, CHOLESTEROL...

Retinol combined with the NP/AP/EOP ceramide complex characteristic of CeraVe - a coherent formulative approach: retinol accelerates cell renewal and can temporarily alter the barrier; ceramides simultaneously restore it. Presence of niacinamide at the top of the formula. Concentration not specified. Light, fragrance-free texture.

✅ Sensitivity verdict Favorable tolerance. The ceramide + niacinamide combination significantly reduces potential irritation - one of the best-designed formulas on this criterion.
User feedback
«Light texture, I've been applying every night for 3 months. More even complexion. Appearance of small white spots at first - normal purging phenomenon.»
«It moisturizes the skin and makes acne marques less visible.»
«Low dose of retinol - despite this, my skin becomes inflamed even with spaced use.»
Summary - one of the best-balanced retinol formulas in the comparison in terms of tolerance. The combination of retinol + ceramides + niacinamide is ideal for profiles wishing to incorporate a retinoid without weakening their skin barrier.
Typology

Retinol 0.3% + Castor Oil

★★★★★ 5,00/5 (3 BeautyDecoded reviews)
EU-compliant concentration

Retinol at 0.3 % combined with castor oil (rich in ricinoleic acid), which provides an emollient action to reduce retinol-induced dryness. Easy-to-read concentration, hermetically sealed bottle, French brand. One of the few products to explicitly display the percentage of retinol.

⚠️ Sensitivity verdict Potential risk of moderate irritation at 0.3 %. Gradual introduction recommended.
Summary - a relevant option for intermediate profiles seeking a retinol with regulatory concentration and emollient benefits. Transparency on concentration is a notable comparative advantage.
Part 02

Retinal (retinaldehyde)

Only 1 conversion step - Maximum efficacy among cosmetic retinoids - Better tolerance than retinol.

Retinal is only one enzymatic oxidation away from active retinoic acid. Published comparative studies document a more effective than retinol at equivalent concentrations, with better skin tolerance. This is the form to consider for profiles wishing to maximize efficacy while limiting irritation. Note: retinal colors pillowcases yellow - a characteristic linked to its aldehyde structure.

The Ordinary

Retinal 0.2% Emulsion

★★★★★ 4,86/5 (32 BeautyDecoded reviews)
🥇 Most commented - retinal
INCI (extract) : AQUA, COCO-CAPRYLATE/CAPRATE, PROPANEDIOL, PENTYLENE GLYCOL, HYDROXYAPATITE, RETINAL, CETYLHYDROXYPROLINE PALMITAMIDE, 4-T-BUTYLCYCLOHEXANOL, ERGOTHIONEINE...

Retinal with 0.2 % in 6th INCI position. The formula includes hydroxyapatite, ergothioneine (fungal antioxidant) and 4-T-butylcyclohexanol (soothing). Hermetically sealed pump packaging.

⚠️ Sensitivity verdict Potential risk of irritation. Gradual introduction recommended 1-2 times a week. Not recommended for first contact with retinoids.
User feedback
«I love it - finally an accessible retinal serum. Fluid texture, be careful to go easy on it at the risk of irritating your skin.»
«Very practical with the pump bottle. I use it every other night. Perfect.»
«2 years of use and I feel like I'm stagnating - I'm going to see about switching to tretinoin.»
Summary - best retinal selection opinion database. Rigorous formula, protective packaging. A relevant option for intermediate profiles looking for an affordable retinal.
Geek & Gorgeous

101 A-Game 10 - 0.1% Retinal

★★★★★ 5,00/5 (7 BeautyDecoded reviews)
Retinal entry recommended
INCI (extract) : AQUA, CAPRYLIC/CAPRIC TRIGLYCERIDE, OLEYL ERUCATE, GLYCERIN, TRIHEPTANOIN, CYCLODEXTRIN, CETEARYL OLIVATE, SORBITAN OLIVATE, RETINAL...

Retinal with 0.1 % encapsulated in cyclodextrin technology that stabilizes the molecule and slows down its release into the skin, contributing directly to tolerance. Light emulsion, fragrance-free, airless packaging. Made to order - freshness guaranteed.

✅ Sensitivity verdict Favorable tolerance. Moderate concentration and cyclodextrin system make it a good entry point for retinal.
User feedback
«Sensitive skin, no bad reactions. I started very gradually, every other night.»
«Airless bottle, light, fluid texture. Low price. Caution, stains pillowcases.»
«The best retinal at 0.10 % for its price. Not irritating at all if well introduced.»
Summary - good retinal entry point thanks to cyclodextrin system. Excellent value for money. Pillowcase staining is a documented cosmetic drawback, not a signal of instability.
Aroma-Zone

Retinal Optimized Anti-Aging

★★★★☆ 4,25/5 (4 reviews BeautyDecoded)
Small budget - first retinal

Retinal serum at an affordable price. Concentration not specified. Tolerance reported as correct by users - the probably low concentration explains the absence of significant irritation.

✅ Sensitivity verdict Favorable tolerance reported. May be suitable for first contact with retinal on a small budget.
User feedback
«Very good tolerance. Great for starting out and testing retinal at a low price.»
«Pleasant texture. My skin tolerated it well. Very good value for money.»
«It takes several months to see the effects, minimum 3 months.»
Summary - accessible input option. The concentration not entered is the main limitation for assessing the expected long-term efficacy.
Part 03

HPR (Hydroxypinacolone Retinoate)

Direct connection to RAR receivers - No conversion required - Very high tolerance - ideal for beginners.

HPR is an ester of retinoic acid that binds to directly to RAR receptors without the need for enzymatic conversion. Its tolerance profile is clearly superior to retinol, with virtually no irritation according to user feedback. This is the form to recommend for retinoid beginners or reactive skins wishing to integrate a retinoid without a purge period.

The Ordinary

Granactive Retinoid 2% Emulsion

★★★★★ 4,94/5 (8 BeautyDecoded reviews)
Better tolerance
INCI (extract) : AQUA, GLYCERIN, CAPRYLIC/CAPRIC TRIGLYCERIDE, ETHYL LINOLEATE, PROPANEDIOL, DIMETHYL ISOSORBIDE, CETEARYL ISONONANOATE, BISABOLOL, HYDROXYPINACOLONE RETINOATE, RETINOL...

Formula combining HPR and retinol - HPR acts directly on receptors, retinol provides complementary activity after conversion. Presence of bisabolol (soothing) and ethyl linoleate (barrier reinforcer). Light, fragrance-free emulsion.

✅ Sensitivity verdict Very good tolerance. HPR is structurally less irritating than retinol. Suitable for beginners or skin that cannot tolerate pure retinol.
User feedback
«Pleasant texture, good for a first retinol.»
«This product is very interesting to start retinol slowly. It is not irritating at all.»
«I use it every other night. Does not leave a greasy residue. Unbeatable price.»
Summary - best tolerance option in the selection. The combination of HPR + retinol in a light, fragrance-free emulsion is a rigorous entry formula. A relevant option as a first retinoid or alternative for profiles with intolerances to pure retinol.
Introduction protocol

The 4 weeks.

Gradual introduction is non-negotiable. Retinoids applied too quickly cause unnecessary irritation - without any additional clinical benefit.

Weeks 01 - 02

First contact

1 application per week, in the evening on dry skin (wait 20 min after cleansing). Apply an occlusive moisturizer on top.

1 × / week
Weeks 03 - 04

Adaptation

2 applications per week if no persistent reaction (redness, desquamation). Observe skin tolerance.

2 × / week
From the 2nd month

Ramping up

Gradually increase to daily as tolerated. Never force the pace - patience is a prerequisite for effectiveness.

Up to 7 × / week
💡
Sandwich« technique. Moisturizing cream → retinol → moisturizing cream. This layering can reduce initial irritation. Useful in the introductory phase, less relevant once tolerance has been established.
Associations

This works - and what to avoid.

Retinol is never used alone. Here are the synergies that amplify its effectiveness and the pitfalls that cancel out its action.

Beneficial associations

Retinol evening + Vitamin C morning

Established complementarity. Cell renewal at night and antioxidant protection during the day do not interfere with each other's mechanisms.

Retinol + Niacinamide

Niacinamide strengthens the skin barrier and can reduce irritation during the introductory phase. Particularly useful in the early stages.

Retinol + Hyaluronic acid

Compensates for potential retinol-induced dryness. Apply before or after depending on serum texture.

Retinol evening + SPF 50 morning

A must. Retinol increases skin sensitivity to UV rays. Sun protection is not optional - it's a prerequisite for effectiveness.

Associations to avoid

Retinol + AHA/BHA the same evening

Cumulative irritation with no additional clinical benefit. Alternate evenings - retinol one day, acid the other.

Retinol + pure vitamin C the same evening

Use vitamin C in the morning only. The two active ingredients have different pH levels and can destabilize each other.

Retinol + Benzoyl peroxide

When applied simultaneously, benzoyl peroxide oxidizes retinol and reduces its activity, with the added bonus of cumulative irritation.

Frequently asked questions

Everything you need really know.

Retinol or retinal - which form to choose?
Retinal is more effective at equivalent concentrations and better tolerated than retinol. For a first retinoid, HPR (Granactive Retinoid) offers the highest tolerance. For confirmed profiles, retinal at 0.1-0.2 % or retinol at 0.3 % are the best-documented options.
How often should I use retinol?
Introductory treatment: 1-2 times a week for 4-8 weeks. As an established routine: up to daily, depending on tolerance. Progression should be guided by the skin's reaction, not by an arbitrary schedule.
Can retinol be used during pregnancy?
No. All topical retinoids are contraindicated during pregnancy and breastfeeding. Consult your doctor or midwife for suitable alternatives during this period.
Why does retinol irritate?
Retinol accelerates cell renewal and temporarily modifies the barrier function. Signs of adaptation (slight desquamation, tingling) are normal at the start of use, and generally disappear within 4 to 8 weeks. Persistent irritation indicates that the product was introduced too quickly or at too high a concentration.
Is retinol compatible with the sun?
Retinol is photosensitizing and photodegradable - it should only be used in the evening. The next morning, SPF 50 is mandatory. Without systematic sun protection, the expected benefits are partially offset by UV damage.
How long before I see results?
The first signs of improvement (smoother texture, radiance) may appear after 4 to 8 weeks. For established wrinkles and firmness, clinical data indicate that regular use for 12 to 24 weeks is necessary to observe significant benefits.
Further information

The videos by Dr David.

Take a closer look at each topic in video form: step-by-step introduction, choice of form, and side-effect management.

Who I am

Plastic and aesthetic surgeon. Founder of BeautyDecoded.

15 yearsclinical expertise
200 000+YouTube subscribers
70 000+Instagram & TikTok followers

«This dossier is the synthesis of what I would have liked to explain to every patient before she bought her first retinoid.»

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Dr Sylvain David Plastic and aesthetic surgeon - Founder of BeautyDecoded

This information is for educational purposes only and does not replace a medical consultation. BeautyDecoded is an artificial intelligence analysis application and is not a medical diagnostic tool. The results presented depend on the user's diligence and skin type.