HL/Skin 10% Niacinamide Serum: Ingredients & How to Use It
By Dogus Dilan, Herbalife Independent Wellness Coach · Last updated 13 August 2026 · 6 min read
Powered by a high concentration of niacinamide, this serum is designed to improve the appearance of pores, skin tone evenness, and spot clarity, while supporting the skin barrier with moisture-balancing ingredients. It’s part of Herbalife’s HL/Skin range, developed with Korean skincare manufacturing (Kolmar Korea).
This guide covers exactly what’s in it, what the tested claims actually cover, and how to use it correctly.
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What’s In It
Ingredients, taken directly from the official product label:
Aqua, Niacinamide, Glycerin, Butylene Glycol, 1,2-Hexanediol, Panthenol, Fructooligosaccharides, Beta-Glucan, Hydrolyzed Hyaluronic Acid, Tocopherol, Dipropylene Glycol, Laminaria Japonica Extract, Eclipta Prostrata Leaf Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Tromethamine, Xanthan Gum, Ethylhexylglycerin, Disodium EDTA, Hydrogenated Lecithin.
Beyond niacinamide itself, the formula includes Panthenol (Pro-Vitamin B5), Beta-Glucan, Hydrolyzed Hyaluronic Acid, Laminaria Japonica (seaweed) extract and Eclipta Prostrata leaf extract as supporting ingredients. No specific comparative claims (e.g. versus other ingredients) are made for these on the official label, so we don’t add any here either.
What the Claims Actually Cover
The official product description supports these specific, tested claims:
- Backed by Korean skincare science — manufactured by Kolmar Korea
- Dermatologically tested and ophthalmologically tested
- 8 hours of moisturisation
- Improvements in: skin tone evenness, skin brightness, wrinkle visibility and size, smoothness, pores appearance
- Suitable for use under makeup and for diverse skin types
- Contains no added parabens
These claims are backed by consumer testing, with the methodology disclosed:
| Claim | Study details |
|---|---|
| Wrinkle visibility, size, volume & depth | 34 women, aged 44–65. Instrumental measurements after 60 days of use. |
| 8 hours of moisturisation | 32 women, aged 25–60. Instrumental measurements. |
| Skin tone evenness, brightness, smoothness, pores appearance | 36 women, aged 44–65. Instrumental measurements after 60 days of use. |
These are cosmetic function claims (appearance and skin condition), based on the consumer studies above — not medical treatment claims.
How to Use It
Apply a few drops to clean, dry skin on the face and neck. Gently press into the skin until absorbed. Use once daily. Don’t forget to use SPF protection during the day. If you’d like to incorporate a facial massage tool into your routine, gently massage the serum in with a White Jade Gua Sha tool — see our Accessories range.
Frequently Asked Questions
What does HL/Skin 10% Niacinamide Serum do?
It’s formulated to improve pores appearance, even out skin tone, improve spot clarity and reduce the visibility of wrinkles, while providing up to 8 hours of moisturisation — based on consumer testing of 32–36 women over 60 days.
Is it suitable for sensitive skin?
It’s dermatologically and ophthalmologically tested and described as suitable for diverse skin types. As with any new skincare product, it may cause irritation on initial use — patch test if you’re unsure.
Should I apply it to wet or dry skin?
Dry skin. The label instructs applying a few drops to clean, dry skin on the face and neck.
Can I use it under makeup?
Yes, the product is described as suitable for use under makeup.
Does it contain parabens?
No added parabens, according to the official product description.
How long until I see results?
The consumer studies behind the tone, brightness, smoothness, pores and wrinkle claims measured results after 60 days of consistent, once-daily use.
Sources & References
- HL/Skin 10% Niacinamide Serum official product label and product description, Herbalife International Luxembourg S.à r.l. / Herbalife Europe Limited (UK)
- Consumer study data as disclosed on the official product label (sample sizes, age ranges and methodology as stated above)
Dogus Dilan — Herbalife Independent Member / Wellness Coach
Writes every guide on this site from official Herbalife product labels and published data rather than marketing copy. As a Herbalife Independent Member, the products discussed here are sold through this shop.