I began using this product after getting the the mini travel size as a gift with purchase. After several uses, I began to see results and now I’m hooked. It helped prevent acne breakouts and also brightened my overall complexion. I can definitely see a difference when I’m not using it and I highly recommend it to anyone looking for a boost in their skincare routine. 

This product is fantastic. It is perfectly exfoliating, filled with effective ingredients, and somehow is still gentle enough for my sensitive skin. I am not only in love with it, but the ENTIRE skincare line. As a medical esthetician you can imagine how much skincare I have gone through and this is quickly reaching holy grail status for me. If the price tag bothers you, remember that with concentrated skincare VERY LITTLE IS NEEDED! That could be the issue some of the other people in the comments are having with pilling.

i experienced burned sensation and couldn't continue using this product. but maybe my skin was too sensitive for this and it probably sign of active ingredient. wish this could work!

This product has greatly helped brighten my skin overall, smooth out my skin texture, and get rid of or significantly lighten my post-inflammatory hyperpigmentation. My skin always looks and feels amazing the morning after using it. I have sensitive skin, so I only use this 2-3 nights a week even though the bottle says to use nightly, and still saw great results from this serum. I also attribute this in part to the fact that exfoliating serums tend to be more gentle than exfoliating toners. If you're worried about the product pilling up, there could be a couple reasons why: (A) you're not giving enough time for products to sink in before going into the next one - find a balance between applying products to damp skin and applying them one right after the other, and/or (B) you could just be applying too many products to your skin.

while it may expensive, i saw results after a week of use which is not something i normally say or take lightly as i am a tough critique of beauty products. I have used hundreds of different products to target my acne scars and hyperpigmentation and this was one of the ones that actually worked. you have to use it regularly tho, so you won't see results unless you're using it properly and of course with other products that will target that concern. I take a star off however bc it does pill with certain moisturizers unless I have combined that cream or oil with each other as long as one of them doesn't make the product pill so lots of trial and error there. as expensive as this is, it shouldn't pill. the smell is really not as bad as others say. it goes away after absorption so it's really not that big of a deal, you get over it.

I got this because I wanted a night serum that could target my dark spots while also giving me the benefits of retinol and acids. This really is a gem! I pair this with Juice Beauty brightening essence and Ren overnight glow dark spot sleeping cream and the next morning my face feels incredibly smooth and blemish free. It has helped to correct my dark spots and even the tone overall. If you are experiencing pilling, keep in mind this is expected because of the resurfacing properties of this product, so wear this only at night! I'll continue to buy this and will look into their other products as well - huge fan!

Going out a limb here by myself, but I waited so long to try Allies of Skin after the hype on Instagram. I finally bought 3 products, this serum being one. Overall I think these are some of the worst products I've ever used. I used this pigmentation serum in my night routine to help with a stubborn sun patch on my forehead. Upon application I find it to be sticky, hard to spread, and odorous. The worst is that it pills/flakes off. I've tried different products before and after, trying to find the right order of application, but everything rubs off. I also had an uptick in very painful acne, and (surprise) not any noticeable improvement in my sun spot. At about $100 a product, I expected a lot more from this brand. I regret not returning it for Dermstore credit while I could.

Really helped with leftover pigmentation and texture I had from the stress of working from home and lockdown. Did not burn or sting. Highly recommend

I have to admit I saw an improvement in my PIH and acne using this. It lasted right around 2 months with nightly use and I'm about to repurchase.

My breakouts and scars significantly diminished within weeks! I have only been using it for a couple months, but my sun spots also appear to be lightening. The texture is a bit sticky, but manageable if you apply a while before bed. Overall, I am very happy with this purchase!