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Retrinal - Avene: https://tinyurl.com/3z8ss6uv L'Oréal Paris Revitalift Anti-Wrinkle Night Retinol Serum, 30ml https://amzn.to/3ycFXIx L'Oréal Paris Revitalift Soothing Facial Cleanser with Pro-Retinol, 150g https://amzn.to/4bx3Icw L'Oréal Paris Revitalift Pro Retinol Anti-Wrinkle Day Cream SPF20, 49g https://amzn.to/3UTzU4o L'Oréal Paris Revitalift Pro Retinol Kit: Cleansing Gel Serum and Cream https://amzn.to/4b8rufm Principia Retinol Serum 0.3% + Vitamin E - Rn-0.3 Skincare https://amzn.to/44DpcT6 or with the coupons: DRAGREICE5 or DRAGREICE10 at this link: https://www.principiaskin.com/serum-a... Retinol is a form of vitamin A that needs to be converted to retinoic acid to be active in the skin. This conversion process occurs in two main steps within the skin cells: Retinol to Retinaldehyde: First, retinol is converted to retinaldehyde (also known as retinic aldehyde). This step is catalyzed by enzymes called alcohol dehydrogenases (ADH). Retinol → Retinaldehyde Retinaldehyde to Retinoic Acid: Next, retinaldehyde is converted to retinoic acid. This conversion is performed by another class of enzymes called aldehyde dehydrogenases (ALDH). Retinaldehyde → Retinoic Acid Here is a simplified diagram using arrows to indicate the transformation: Retinol → Retinaldehyde → Retinoic Acid This diagram shows how retinol, when applied to the skin, undergoes chemical transformations until it becomes retinoic acid, which is the active form that can interact with receptors in the skin to induce effects such as increased collagen production, improved skin texture, and reduced expression lines. Products containing retinoic acid, also known as tretinoin, are commonly available in different strengths, depending on the intended use and local regulations. Here is a diagram of the most common concentrations of retinoic acid commercially available: Low Concentration: 0.025% Medium Concentration: 0.05% High Concentration: 0.1% ???? Products I recommend: https://bit.ly/3CME0kq ????Ebook: https://go.hotmart.com/X84136348N ???? Social media: @dragreicemoraes ???? Coupons: Principia https://www.principiaskin.com Use DRAGREICE5 or DRAGREICE10 at checkout. ????️ #retinol #retinoic acid #tretinoin About my channel: I seek to promote knowledge and awareness about health and beauty. My goal is to provide reliable and accessible information based on up-to-date scientific evidence. Always remember to seek professional guidance.