The Cellular Bioprotection ™ patent, true internal biological protection, preserves and stimulates the skin's natural defenses against the harmful effects of the sun. The vitamin E and vitamin C selected in Photoderm SPOT-AGE SPF 50+ are highly stable. They provide complementary antioxidant protection against the effects of the broad spectrum (free radicals). One is lipophilic and the other is hydrophilic, allowing antioxidant protection of the elements that constitute the cell. Vitamin C is also capable of regenerating vitamin E allowing for sustainable action. They also help prevent the appearance of new spots. The vitamin C added to the product is combined with a sugar that makes it three times more stable than the active biological form of vitamin C called L-ascorbic acid . Therefore, its distribution at the skin level is controlled. The cleavage with the sugar molecule to release active vitamin C takes place in contact with skin cells. This allows for the controlled release of active vitamin C when needed! Vitamin E is introduced in its most natural and active form, alpha-tocopherol . It blocks radical reactions that allow to protect cell membranes and limit the effects of photoaging on the skin. Centella asiatica prevents damage to the dermis and regenerates the skin: inhibiting the degradation of the extracellular matrix by hyaluronidase, elastase and MMP-1 strengthening the extracellular matrix stimulating the production of collagen I in the dermis. Light and dry gel-cream texture to the touch Excellent makeup base Very good skin and eye tolerance. Water resistant Resistant to high temperatures and humidity. SPF 8 hour retention Non-comedogenic Instructions for use Use daily to minimize the risk of dark spots and photoaging. Apply alone or after your day cream. Apply evenly and generously before exposure (reducing the amount of product reduces the level of protection). Reapply frequently, before and after swimming, scrubbing and playing sports. Apply to healthy skin. Use of post-surface laser