Cannot really pinpoint on its individual effect and result because this is just 1 part of my customized serum. I combine this with vitamin c and licorice, and it's my perfect daily serum. I've been using it for more than a year now, it's easy to apply and easily absorbed and my skin has definitely been clearer and brighter than before. I definitely recommend it!

My skin feels refreshed after using the serum together with the optimizer

I use this serum as a part of my daily dose with the Ceramide and French Pine Bark serums, but I used it on its own first. I have really sensitive, acne-prone combination skin, and even on its own this product was amazing! Its super lightweight and really helps reduce acne and make my skin smooth and soft.

I just bought this product recently when it was on sale! Just used this for a week and I can see that my blemishes are improving very well! It is absorbed very quickly into my skin and it is not sticky at all!

From the start of Circuit Breaker I keep having break out on my face. Thanks to skin inc Vitamin B3+ It helps to clear my pimples! Can go without it a single day! I'm loving it!,

i love this serum both individually and mixing it with the rest of the serums. Skin looks amazing after constant use. Cannot leave without me.

Ever since I started using this serum, my face feels healthier than ever! It’s less red and I no longer have acne 

My face is no longer as irritated as it was before. Face is also not as red or sensitive as before would definitely recommend 

My usually irritated skin have improved greatly after one month of daily usage! Definitely recommend 

My skin is noticing healthier and more even and I can't wait to order more! Definitely a must