Achieve Level 1 Retinoid is a light gel-creme serum that provides introductory Vitamin A Propionate topical benefits alongside calming and brightening ingredients to new and lapsed users and those with sensitive skin who have not been able to tolerate topical retinoids in the past.  We typically recommend a taper that builds frequency of application over the first few weeks - Week 1 apply 2 nights; Week 2 apply 3 nights; Week 3 onward apply every other night until your next consult with your Aesthetician!  As with all topical retinoids, consistency is key, so avoid any long breaks in usage, and ALWAYS use in conjunction with SPF.