A313 is a French pharmacy staple, known for its vitamin A (retinol) based formula. It's a thick, greasy ointment containing 0.12% retinol esters, a mild form of vitamin A. A313 is used to address various skin concerns like fine lines, wrinkles, pigmentation, acne, and actinic keratosis. It's a popular choice for those seeking anti-aging and skin renewal benefits. Here's a more detailed look at A313: Key Ingredient: A313 contains retinyl palmitate, a type of retinol ester, which is a milder form of vitamin A compared to pure retinoic acid. Benefits: It's known to: Reduce the appearance of fine lines and wrinkles. Improve skin tone and pigmentation, including post-acne marks. Help manage acne, oily skin, and blackheads. Address actinic keratosis. How it works: Retinoids like those in A313 stimulate cell turnover, boost collagen production, and help with skin renewal. Texture: A313 is a thick, greasy, translucent ointment, not a typical cream. Usage: Start by applying a small amount to dry skin 1-2 times a week, gradually increasing frequency as tolerated. It's recommended to use it at night after cleansing, followed by a moisturizer. Always use sunscreen during the day when using retinoids. Considerations: Avoid using A313 on sunburned, broken, or irritated skin. If you have sensitive skin, start with a low frequency of application. Consult the product leaflet for detailed precautions and potential side effects.