This serum is formulated with 58% miracle marine water, 0.01% retinol 0.01, 5% niacinamide and adenosine. Helps to boost hydration, brighting the overall complexion and combat sings of aging. The texture is light, quickly absorbing and not tacky. It’s gentle, i didn’t experience any irritation after use it. I think that is a great option for sensitive skin and people that want to start using retinoids.