• Bikini line + inner thighs
  • 4% niacinamide
  • Alpha arbutin + vitamin C
  • pH-balanced, gentle formula

What it is

A brightening serum made for the bikini line, inner thighs, and underarms, from Gleamin, the skincare brand focused on dark spots and melanin-rich skin. Intimate skin is thinner and deals with shaving, waxing, and sweat, so a face serum is not always the kindest choice; this one is built for those areas.

What it does

Helps dark-looking areas from friction, shaving, and ingrown hairs look brighter and more even over time. Soothing allantoin, panthenol, and centella keep delicate skin comfortable, and the formula was developed with the pH of intimate skin in mind.

Who it's for

Anyone with darkening along the bikini line, inner thighs, underarms, or other places where skin rubs together. Patch test on your inner arm for 2 to 3 days first, and use on external skin only.

How to use

How much: A thin layer over the target areas, morning and night. A little goes a long way.

1. Wash and dry the area. For best results, apply to dry, freshly washed skin with clean hands.
2. Smooth a thin layer over the bikini line, inner thighs, underarms, or other areas where skin rubs together. For external use only.
3. Use morning and night. Be patient: tone changes build gradually over 8 to 12 weeks of regular use.

Where it fits: After showering, before getting dressed. Skip right after shaving or waxing; wait a day or two until skin feels calm.

Inside the formula

4% niacinamide

Vitamin B3, a well-studied ingredient that helps uneven-looking tone look more balanced and supports the skin barrier

Vitamin C (two stable forms)

Two stable, water-soluble forms of vitamin C for a brighter, more even-looking tone

Alpha arbutin

A popular brightening ingredient that helps dark-looking areas look more even over time

Turmeric

A kitchen classic loved for its glow-boosting reputation; it also gives the mask its sunny color

Allantoin, panthenol, and centella

Classic skin-conditioning ingredients, chosen to keep the formula comfortable on delicate skin

Why we stock it

We stock this because intimate skin gets the worst of friction and shaving, and most brightening advice for it is terrible. This is the one formula made for those areas on purpose, not a face serum wearing a new label.

The Nexus standard

Vetted before it lists

Every brand on our shelf is screened before it can sell here. Fewer than you'd think make it through.

Direct from the maker

We work directly with independent brands and skip the retail markup, so you pay less for the same products.

30-day returns

Changed your mind? Returns are easy within 30 days on unopened products. Secure checkout, always.

About the brand

Gleamin

The vitamin C mask that went viral

Gleamin was started by New Zealand founder Jordan Smyth, who struggled with rosacea and spent two years perfecting a mask inspired by homemade turmeric-and-vitamin-C rituals. The result was their Vitamin C Clay Mask, blending Kakadu plum, desert lime, and turmeric: vegan, cruelty-free, dermatologist tested, and comfortable to wear instead of tight and cracky. Now based in Los Angeles, the brand has earned the trust of over a million customers.

We stock Gleamin because their clay mask actually brightens without that tight, cracked-face feeling, and the reviews speak for themselves.

Shop all Gleamin

Skincare questions, answered

Where does this go in my routine?

Thinnest to thickest: cleanser, toner, serum, moisturizer, then SPF in the morning. This product's How to use section above tells you its exact step.

When will I see results?

Give it 4 to 6 weeks of consistent use — that's one full skin cycle. Hydration shows up in days; tone and texture take weeks. If your skin reacts badly (stinging, new breakouts that don't settle within a week), stop using it.

I have sensitive skin. Will this irritate me?

Patch test first: a dab behind your ear or along your jawline, wait 24 hours. Fragrance-free formulas are the safest bet for reactive skin — check the highlights on this page.