About us: Beautydecoded

About BeautyDecoded and Dr. Sylvain David

Last updated: [June 2026]

Why BeautyDecoded Exists

I am the Dr Sylvain David, a plastic and cosmetic surgeon in Nice, former university clinical instructor, and former hospital resident. Throughout my clinical practice, I have made a simple observation: my patients all too often pin their hopes on surgery or cosmetic medicine, whereas The best way to maintain healthy skin is through daily prevention..

However, this prevention requires cosmetics that are truly suitable—and that’s where the market becomes confusing for most people.

The aggressive marketing tactics of some marques companies and their sometimes dubious claims have made the cosmetics industry allergic to science. Consumers choose products based on advertising claims rather than objective criteria. As a result, they spend a lot—sometimes on products that are ineffective or even counterproductive.

I founded BeautyDecoded to restore this scientific rigor, alongside my work at the clinic. Our mission: to help you choose your cosmetics the way a dermatologist would evaluate them—using objective data, a transparent methodology, and complete independence from marques.

Our Scientific Methodology

BeautyDecoded is based on a medical database of more than 30,000 cosmetic ingredients, each evaluated based on its concentration, its effects as demonstrated by scientific publications, and its safety profile.

Our analysis algorithm evaluates each product based on three objective criteria:

  1. Compatibility with your skin type — dry, normal, combination, or oily. An ingredient that works well for oily skin may be problematic for dry skin, and vice versa.
  2. Gentle on sensitive skin — systematic screening for potentially irritating ingredients, known allergens, endocrine disruptors, and skin sensitizers.
  3. Proven effectiveness for the targeted skin concerns: wrinkles, blemishes, dark spots, redness, and dehydration.

This methodology is the result of three years of research and development, and it is applied in exactly the same way to every product, regardless of the brand.

Our independence: a non-negotiable principle

BeautyDecoded is a platform that is completely independent of marques cosmetics. No brand can buy, influence, or alter our reviews. We do not receive any marketing budgets from the marques brands we review, and we do not accept any product placements.

To preserve this integrity, our business model relies exclusively on our Premium subscription—never on advertising or commercial partnerships.

The Premium subscription gives you access to:

  • More than 336 personalized routines based on your budget, age, and skin type
  • An in-store product scanner that provides an instant dermatological analysis based on the barcode
  • The creation of blacklists of ingredients to avoid (endocrine disruptors, fragrances, allergens, etc.)

The Beautydécodeurs Community

Beyond technology, the real-life user experience is a cornerstone of our platform. Our Beauty Decoders are a dedicated community that shares its honest opinions on the best 30,000 products listed in our database.

To date, we have collected more than 50,000 authentic reviews from our users. This real-world feedback, combined with our scientific analysis of the ingredients, provides a unique dual perspective on each product: the scientific promise and the user experience.

Each contribution earns points, which allow you to enter contests to win skincare products selected by our experts.

Who is Dr. Sylvain David?

  • Degree : Doctor of Medicine, specializing in plastic, reconstructive, and cosmetic surgery
  • Hospital Training : former hospital resident, former university attending physician
  • Current fiscal year : plastic surgeon in Nice
  • Scientific Publications : Google Scholar
  • Professional Profile : Doctolib · LinkedIn · Personal Website

Check out my daily analyses

I share my video reviews and analyses of the latest beauty news on the following platforms:

Important Note: BeautyDecoded (the mobile app and the beautydecoded.com website) is an educational analysis tool based on the science of cosmetic ingredients. It is not a medical diagnostic tool and is in no way a substitute for an in-person consultation with a dermatologist or physician.

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