Idebenone is one of my very favorite antiaging ingredients. As a former cosmetic R&D chemist, I can assure you that this ingredient is effective and well-tolerated by all skin types. So when I saw that this sunscreen contains Idebenone, I was thrilled! I have very fair, extremely sensitive skin, and wearing this under my foundation makes me feel like I'm well-protected from damaging sun exposure and also working hard to fight those subtle signs of aging. It's smooth and moisturizing, but not too heavy, and it doesn't have the ashy flashback of some high-SPF products. Will definitely be purchasing this again.