Ultra Pure High-Potency 5.0% Niacinamide Serum

Kiehl's Ultra Pure High-Potency 5.0% Niacinamide Serum takes the minimalist route: a concentrated treatment built from only ten ingredients, with nothing added for scent or colour. If your skin gets shiny by midday or flushes easily, this is the stripped-back serum made for exactly that.

What it actually does

• Keeps oil in check. The formula is designed to soak up excess sebum, which makes it a smart pick for shine-prone zones like the T-zone.
• Softens the look of redness. Kiehl's formulated it specifically to make visible redness appear less pronounced.
• Brightens with niacinamide. The 5% niacinamide at its core works on visible dullness, per the brand.
• Deliberately short ingredient list. Just ten ingredients, no fragrance, no colorants — Kiehl's says this minimal approach was chosen for absorption and efficacy.
• Feels calming fast. In Kiehl's own four-week consumer study, 92% agreed their skin felt soothed after one week of use.
• The bottle ships in recyclable packaging.

How to use

1. Morning and evening, dispense two to three drops onto clean, dry skin.
2. You can also spot-apply it only where you get oily or break out, then moisturise the rest of your face as usual — Kiehl's recommends this "zone treating" approach.
3. It layers well with hydrating or exfoliating serums; apply before your moisturiser.

Is it right for you?

Questions

Can I use it twice a day?

Yes — Kiehl's suggests applying it both morning and evening on clean, dry skin. Two to three drops is enough for the whole face.

Which skin types can use it?

The brand lists it as suitable for normal, dry, combination and oily skin. Its main targets are oiliness, redness and uneven texture.

How long does delivery take?

Delivery takes 3 to 21 working days, depending on availability. Items ready in stock arrive at the shorter end of that range; items we order in for you take longer.

How can I pay?

Credit card, debit card, Instapay and mobile wallets — no cash on delivery.

What is the return policy?

Returns are accepted for defective, damaged or expired items only, reported within 1 day of delivery. Once verified, we refund to the original payment method within 15–30 days.