OS-01 Lip Mask

"The peptide lip mask for people who've already tried every balm."
Our take

$42 Price at OneSkin, checked Nov 2026.

The short answer

OneSkin's OS-01 Lip Mask is a thick overnight lip treatment with the brand's signature peptide. You wake up with softer, smoother-looking lips. It's worth it if regular balms wear off before morning and you care about the lip line, not just dryness.

Best for

Lines + Lift

Shop at OneSkin

We may earn a commission when you buy through this link. It never changes our take.

Picked, never paid for

What it is

OneSkin's overnight lip mask built around its OS-01 peptide. Thick, cushiony and made to wear to bed.

Overnight lip treatment
Features the OS-01 peptide
Designed for dry lips and the lip line

How to use

Apply a generous layer to lips as the last step of your night routine.

Our Take

Why it made the edit.

Why we love it: It actually stays put overnight, and a little goes a long way.
Skip it if: You just want a cheap everyday balm. Laneige's Lip Sleeping Mask does the overnight job for less.
The catch: $42 is a lot for a lip product, and the peptide story is brand-led, so judge it by how your lips feel.

Keep scrolling