What it is: A hydrating, no-rinse exfoliating lip serum that is clinically shown to visibly smooth chapped, peeling, or dry lips after just one night. Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Dryness and Uneven TextureFormulation: LiquidHighlighted Ingredients:- Mandelic Acid: An AHA that gently exfoliates and hydrates to visibly smooth.- Gluconolactone: An exfoliating acid that draws moisture in.- Glycerin: Hydrates. Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also vegan and cruelty-free.What Else You Need to Know: This AHA lip formula hydrates and gently exfoliates, without disrupting the sensitive lip skin barrier like physical scrubs can. Inspired by board-certified dermatologist Dr. Shereene Idriss’ (@shereeneidriss) viral "lip basting" hack for chapped lips, this formula is clinically shown to improve lip texture.Clinical Results: In an independent clinical study and consumer-perception study of 34 subjects who used the Barrier Baste Lip Basting Duo,* after one application:- 94% of users reported that this duo immediately helps heal dry, damaged lips- 100% of users reported relief in discomfort caused by dryness and flakiness- 100% of users reported immediate protection, nourishment, and comfort of lips*Includes the Barrier Baste Lip Peel and Barrier Baste Lip Baste.