Hotliner Hyaluronic Acid Contouring Lip Liner

Kosas Hotliner is a retractable lip liner powered by hyaluronic acid, made to define and amplify the shape of the lips without the dryness liners are known for. It glides on satiny and smooth, and the pencil has a brush and a sharpener built into it.

What it actually does

• Contours without dragging. Kosas describes the application as gliding on smoothly and evenly with no pressing or tugging at the lip line.
• Hyaluronic acid holds hydration in place and, per the brand, visibly plumps.
• Konjac root is included to help shield lips from signs of ageing and environmental damage.
• Long-wearing satin colour. The listed benefits are hydrating, long-wearing and plumping.
• Works as a liner or a full lip colour. Kosas positions it both for contoured definition and for filling the lips in completely.
• Built-in brush and sharpener, so blending and maintaining the tip don't need extra tools.
• Clean-formula callouts. Free of parabens, formaldehydes and formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS and SLES, triclocarban and triclosan, with less than one percent synthetic fragrance — and vegan, gluten-free and cruelty-free.

Brand-reported study results

Kosas cites a consumer perception study in which 32 women used Hotliner for four weeks. These are participants' own reported impressions, not our claims:

• 100% agreed it glides on smoothly and evenly and doesn't dry out the lips
• 100% agreed it doesn't feather, transfer or bleed
• 100% agreed lips looked plumper and more volumised

Consumer perception data reported by Kosas. Individual results vary.

How to use

1. Trace the outline, going slightly over your natural line at the cupid's bow and at the centre of the lower lip.
2. Soften it. Smudge with a fingertip, or diffuse the edge using the built-in brush.
3. Wear it alone or layer it. Kosas suggests topping it with Wet Stick or Wet Lip Oil Gloss — both sold separately — for a juicier finish.

Is it right for you?

Questions

Can I fill in my whole lip with it?

Yes — Kosas designed it for both. Line and smudge for a soft contour, or colour the lips in completely and leave it as your lip product.

Do I need to sharpen it?

It's retractable, and a sharpener is built into the pencil, so you can reshape the tip when it rounds off without buying anything extra.

Will it dry my lips out?

The formula is built around hyaluronic acid specifically to avoid that, with konjac root alongside it. In the brand's four-week study, every participant agreed it didn't dry their lips.

What can I wear over it?

Kosas pairs it with Wet Stick and with Wet Lip Oil Gloss, both sold separately, for a glossier result. It also works fine under any balm you already own.

Delivery, payment and returns?

Delivery takes 3 to 21 working days, depending on availability. We take credit card, debit card, Instapay and mobile wallets — no cash on delivery. Returns apply only to items that arrive defective, damaged or expired, reported within 1 day of delivery; refunds reach your original payment method within 15–30 days.