Wet Lip Oil Plumping Peptide Lip Treatment Gloss

Kosas Wet Lip Oil is three things in one tube: a peptide lip treatment, an oil and a gloss. You get a wet, vinyl-looking shine with a slick of sheer colour, while the formula underneath works on plumpness and hydration.

What it actually does

• Gives a high-shine, almost-wet finish. The look is glossy and vinyl-like rather than soft or satin, and the colour builds if you want more payoff.
• Treats while it shines. Peptides are included for visible plumping, hyaluronic acid to draw in and hold water, and evening primrose oil as a protective, nourishing oil.
• Plumps and smooths over time, per the brand. Kosas points to its own four-week expert-graded and consumer studies, each on 33 people, where participants reported fuller, more hydrated and smoother lips with daily use. Self-reported findings — your experience may differ.
• Comfortable, not gluey. The texture is described as soft and non-sticky, so it does not grab your hair in the wind the way heavy glosses do.
• Plays well with other lip products. It is built to work alone or layered over lipstick and balm.
• Formula notes. Vegan and cruelty-free, with no sulfates SLS or SLES and no parabens.

How to use

1. Wear it on its own for a bare, glassy lip.
2. Or layer it: lip treatment first, then a lipstick or lip colour, then this on top for slickness and shine.
3. Reapply through the day — nothing here needs to set before you talk or drink.

Is it right for you?

Questions

Is it sticky?

Kosas formulated it specifically to avoid that — the finish is high-shine but the feel is soft and comfortable rather than tacky.

What makes it a "treatment" and not just a gloss?

The active side of the formula: peptides for visible plumping, hyaluronic acid to hold hydration, and evening primrose oil to protect. The brand's studies measured plumpness, hydration and smoothness over four weeks of daily use.

Can I wear it over lipstick?

Yes — that is one of its intended uses. Over a matte or satin lipstick it adds the wet finish without fully covering the shade underneath.

Is it vegan?

Yes. Kosas lists it as vegan and cruelty-free, free of parabens and of sulfates SLS and SLES.

How long does delivery take?

Delivery takes 3 to 21 working days, depending on availability. Stocked shades ship sooner; anything we order in for you sits at the longer end.

Payment and returns?

Credit card, debit card, Instapay and mobile wallets — no cash on delivery. Returns are accepted for defective, damaged or expired items only, reported within 1 day of delivery, with the refund issued to your original payment method within 15–30 days.