A genuinely high-strength niacinamide step

Most familiar niacinamide serums are in the 5-10% range. This formula uses 20% niacinamide alongside 2% acetyl glucosamine, an ingredient often paired with niacinamide in tone and texture-focused routines. It is a concentrated formula for people whose skin already knows niacinamide, rather than the easiest first product for someone new to the ingredient.

The ingredient list also includes calcium pantothenate (vitamin B5), pyridoxine HCl (vitamin B6), sodium ascorbyl phosphate (a vitamin C derivative), allantoin, arginine and botanical extracts, including lavender.

Key ingredients

• Niacinamide (20%): a high-strength concentration; introduce it gradually and pay attention to how your skin responds.
• Acetyl glucosamine (2%): often paired with niacinamide in formulas focused on the look of tone and texture.
• Calcium pantothenate and pyridoxine HCl: forms of vitamins B5 and B6 included alongside niacinamide (vitamin B3).
• Sodium ascorbyl phosphate: a stable vitamin C derivative.
• Allantoin, arginine and botanical extracts: additional skin-conditioning ingredients, including lavender extract.
• Lavender extract: a scented botanical to note if you are sensitive to fragranced ingredients; check the full INCI and patch-test before use.

How to use

Apply a small amount to clean, dry skin, avoiding the eye area. If you have not used niacinamide before, consider starting with a lower-strength 5-10% product for a few weeks before moving to 20%. If your skin already tolerates niacinamide, begin with this serum two or three times a week and increase only if your skin stays comfortable. Follow with moisturiser and use sunscreen every morning. Patch-test before first use, and stop if you develop persistent stinging, redness or irritation.

Specifications

Product type	Face serum
Size	30ml
Brand	oh!oh!
Key actives	Niacinamide (20%), acetyl glucosamine (2%)
Also contains	Vitamin B5, B6 and C derivatives, allantoin, arginine and botanical extracts
Lavender	Lavandula angustifolia extract; check the INCI if sensitive to fragranced botanicals
Recommended for	Skin already familiar with niacinamide
Origin	South Korea

Frequently asked questions

Is 20% niacinamide too strong?

It is a high-strength concentration compared with many familiar 5-10% serums. It may not be the best first niacinamide product. If you are new to the ingredient, start lower and move up only if your skin tolerates it.

What does acetyl glucosamine do?

It is often paired with niacinamide in formulas focused on the look of more even tone and smoother texture.

Does it contain fragrance?

The formula includes lavender extract, a scented botanical that may matter if you are sensitive to fragrance. Check the full ingredient list and patch-test before use.

Can I use it with vitamin C or exfoliating acids?

It includes a vitamin C derivative. Introduce this high-strength niacinamide serum gradually, especially if your routine also includes exfoliating acids or retinoids. Add one new active at a time and reduce use if irritation develops.

How often should I use it?

If your skin already tolerates niacinamide, start two or three times a week and increase only if it stays comfortable. If you are new to niacinamide, start with a lower-strength product first rather than beginning with 20%.