COSRX The Retinol 0.5 Oil is an incredibly effective anti-aging oil with 0.5% retinol, which is particularly suitable for you who are already an experienced user of vitamin A and retinol products. This oil will both give your skin moisture and at the same time minimize the visibility of fine lines, pigment spots and impurities. COSRX The Retinol 0.5 Oil is an oil that contains 0.5% pure retinol. It is especially aimed at you, where the skin has become accustomed to retinol, but still experiences loss of elasticity and dryness. Retinol is a superior anti-aging ingredient, and one of the most well-documented and researched ingredients in anti-aging skin care. Retinol will reduce the visibility of lines, acne scars, pigment spots and prevent new ones from appearing with regular use. In addition, it is both known and well documented in science that retinol is effective against pimples, uneven skin texture, lack of glow and clogged pores. In addition to the retinol content, you will also find squalane and vitamin E on the ingredient list. Squalane is an oil which is typically extracted from the olive fruit or rice bran, and which in molecular size and behavior is very similar to the skin's own fat. This benefits both the absorption of the retinol, and at the same time strengthens the skin barrier with moisture, so that redness and irritation are avoided. Vitamin E is an antioxidant that protects the skin against premature aging. It's great to use with retinol as it penetrates and helps protect the skin from age spots and sun damage while repairing existing damage in the deeper skin layers. In addition, vitamin E will improve the skin barrier, add moisture and reduce redness. Retinol should be used in your evening routine. REMEMBER to always use sun protection during the day, as retinol makes the skin more susceptible to UV rays (including UV damage) and more reactive in the sun. This will also protect against further irritations and a thinner skin barrier.