Good Product. I am very happy to have this product.

I love using this first for my daily routine. It helps regulate my oily skin during the day!

I noticed a difference the very first day. I have combination skin, and after just a couple hours at work, my face looks oily. However, since applying the serum, I noticed my face didn't have an oily shine. I also received a comment regarding my pores appearing smaller.

Personally love. Helps with minimizing acne for me.

Kiehls ultra pure high potency niacin-amide serum is great for my oily skin. This serum is very thin and lightweight. I like that it absorbs quickly into the skin and although it looks like an oily it's not oily at all it actually reduces oil in my tzone which is great. I have seen my skin get clearer and my skin texture has improved a lot. This serum also minimizes the appearance of pores!

Kiehl' Ultra Pure High-Potency 5.0% Niacinamide Serum is one of the most effective, non scented , hydrating serums I have ever tried.. It is a staple to my skin care routine and I can't go without it. I use to have a lot of problems with breakouts and uneven skintones and dry skin.. ever since I found this product my skin has never looked or felt better. It's easy applicated and lasts all day and evening . My skin has cleared up 10000% since using this product and I'll never stop raving about it . I will recommend and stick by this product every time someone asks me what to buy!

I have combination skin that leans more towards the oily side too often, so this Kiehls Ultra Pure Niacinamide serum works amazingly well to keep me from looking shiny and oily throughout the day. No need to carry blotching papers in my bag and make multiple bathroom trips with this serum keeping the shine at bay. I enjoy this serum and it's become a staple in my skincare.

I've tried A few different niacinamide solutions and this is by far my favorite. I found with other solutions my face got really oily and it made me break out as I have a really sensitive skin but this worked wonders! It did exactly what I needed it to do and it didn't cause any other symptoms like outbreak or dryness. Overall I would highly recommend this product it is a little bit pricier but I believe it's worth it!

Amazing product. Bought it for a friend and she loves it highly recommend

This serum have a good texture, it is not too thick but medium. So, it absurds quickly. However, you need to use it longer than 6 months to see its effectiveness on your skin.