Ultra Pure High-Potency Serum 5.0% Niacinamide - Siero Viso

Nice product

All this product have helped me to improve my face condition which was dry and not smooth

Nice to mix with the Hyaluronic Acid serum

I've been mixing this with Hyaluronic Acid serum and I'm loving the combination and results. I feel tighter, more hydrated a little less red.

0 noticeable differences

I used the whole bottle. I didn’t notice any significant difference…

J’adore

Si vous avez la peau grasse/mixte vous aller adorée elle hydrate la peau mais ne fait pas de effet collant sur le visage fait disparaître les boutons vraiment une pépite

Unremarkable but not terrible

My dermatologist recommended I use niacinamide to help reduce redness, and I've been using The Ordinary's 10% formulation for years which works pretty well. I decided to give Kiehl's version a try because I read online that 5% is actually a better formulation since too much niacinamide is bad for the skin and it's included in many products (including my lotion). This product is OK. It's a much more runny and stickier formulation than The Ordinary's. The instructions say to use 4-5 drops; honest, I think 3 is more than enough unless you have 5-10 minutes in the morning to wait for this to absorb. After 2 months, I haven't noticed a real difference to my skin. After I finish up this bottle, I'm going back to The Ordinary seeing as it does the same thing for a much lower price.

Que du bonheur !

Répond parfaitement à mes attentes

Shine free

Bought this and used it instead of other brands I had previously used. I noticed a difference straight away and within a few weeks my shine had gone and blemish free. Will buy again

A must for oil control

This is one the best oil control products I’ve used and I have very oily skin this with a good moisturizer and Kiehl’s Milk Peel gets my skin right

Simple Niacinamide Serum

This Serum is excellent for calming and improving skin texture. It’s lightweight, absorbs quickly, not sure if it works effectively but try to keep using it for my skincare routine

Byebye blemishes

I LOVE this product. I have super sensitive acne prone combination skin and shockingly this product clears my pimples within a few days without drying or causing eczema patches. It's pricey but it works.

waste of money

i had very high expectations on this product, i have been using it for while now and the qualitu of my skin has worstened. still need to finish the bottle, but very much waste of money.

Great product

I can always tell a difference in my skin if I run out of this. Helps with oil control a lot.