After more than a week of nightly use (just over half the sample), I'm not seeing a huge dramatic effect, but it's a definite improvement over what the 2% BHA was doing. (Using on entire face, but mainly looking at the persistent clogged pores on my nose.) Not sure if it's worth the huge cost, but maybe. The sample is DEFINITELY worth buying: it lasts long enough to really get a sense of whether it'll work for you. All Paula's products should be available in substantial sample/travel sizes!

Outstanding product, terrific-looking results. I was lucky to read the review by Michal before I purchased, which outlined the perfect solution to the overenthusiastic pump mechanism: Purchase and use a sample size also. When it's gone, pump the product into the sample vial and dispense from that on a nightly basis. Much easier to manage!

This product definitely minimized the size of my pores. I also noticed that I have less breakouts ever since I started using it.

Anyone with oily skin n occasional breakouts who is reaching a plateau in their skin care regime should get this. Definitely prevents pimples n stops new ones from forming.

Gave it 3 stars b/c I'm indifferent about this product. I'm on my second tube, bit not sure I'll be buying again. I can't see a difference when I use vs. don't use. Gave it a few months and nada. Not for me, but I'll give a my sister to see if it does anything for her and report back.

I've tried nearly the entire PC skin balancing line of products hoping for some improvement in the large pores on my face, and when that didn't work, I purchased the trial size of this product to try. I was very disheartened to see that even after I finished all the product that came in the sample size (more than a week's worth of uses), there was no difference in my large pores :(. Maybe I'll try another type of product now...

I decided to try this during a bout with adult acne. I was not impressed. The product package is very hard to manage and tends to spill out more than you require. It did help me slightly but with the price point you are better off buying a tube of Tretonin (Retin A) which will have better results and last way longer. I like many of the products but this was not one of them.

All my life -- OK, since puberty -- I've been saying that if there was a miracle cure for blackheads on the nose, I would be the happiest woman on the planet! I can apply this on my nose, and practically overnight, the blackheads are diminished or gone! I'm not saying that my nose is blackhead-free, but it's much, much better, and what blackheads I do get are smaller and extract a lot more easily. Oh, and it's also shrinking the few small sebaceous hyperplasia that I have. LOVE THIS STUFF!

I bought this product to help with blackheads and breakouts. It has an oily feel but seems to work quite well.

This is the only PC product I've been disappointed with. I have combination skin and my concerns are breakouts, aging, and uneven skin tone. All this product did was irritate my skin greatly. Redness and dryness as a result. Not pretty!

I've been using this product for about 3 months now. Although I haven't found that it eliminates blackheads completely, my pores are definitely smaller. If I do start to get a pimple, this product often stops it in its tracks or speeds up the healing process. I only need the tiniest amount of the product. I've found the trick is not to fully press down on the dispenser, but gently press the top until only a trickle comes out. In three months I haven't even gone through half the bottle.

I have struggled with lumps and bumps on my face, not pimples or acne just lumps and bumps. Not sure what they are but they have bothered me for years and have made me self conscious. In two days of use this product has diminished them greatly. I am so thrilled with this product it is almost hard to put into words. This, by far is the best!

I have struggled with lumps and bumps on my face, not pimples or acne just lumps and bumps. Not sure what they are but they have bothered me for years and have made me self conscious. In two days of use this product has diminished them greatly. I am so thrilled with this product it is almost hard to put into words. This, by far is the best!

I love this product and WANT very much to buy more but I am debating it because of the bad packaging.

I really wanted this to work. I have a few brown sun spots on one cheek and also several sebaceous hyperplasia bumps. I have used two complete vials of BHA 9 with no results at all. Even my one large pore was not affected. I tried it as my last product (first vial) and my only product (second vial), but neither worked. Dermatology costs to treat s.b. are outrageous, usually require at least two treatments, and are not an option for me at this time. So disappointed that BHA 9 didn't work.

Excellent product. I use it at night and my skin looks gorgeous in the a.m. While I understand the pump packaging helps with product preservation, this particular pump doesn't work well. There's a catch in the pump that either gives me a tiny drop of the serum or I can push through the catch and get a giant glob of serum. Regardless, I will continue to use it because I love it but I'm hoping you guys will do a little restructuring. After some trial and error I've got the perfect PC routine!

This product really works as it says it will. In less than a week of using only once a day, my previous acne scars are much less noticeable. I am also prone to red bumps from shaving and this has helped prevent or clear them up. The only thing I don't like is the packaging. Please do something about the pump. With how well the product works, there's always too much left over after spot treating.

My skin is somewhat sensitive & prone to breakouts since I began 6th grade (remember the first Earth Day?). I've used a plethora of products over the course of those years. Then I began to watch Paula on AM Northwest. It was thanks to her that I began to see some relief & better understand my skin. BUT this has to be the best product for breakouts I've ever used. After applying it to blemishes (deep and shallow), I see a rapid reduction of inflammation & then within 2-3 days blemishes are gone!

Unfortunately, this is the only product from PC that I have tired and have been unhappy with. I was excited to see that they had a product which claimed to help treat Milia. I suffer from Milia on jaw and neck and have to have them extracted monthly and it is very costly. I wanted to help treat and prevent them at home to reduce the need for extraction. The BHA 9 did nothing for me, not the Milia or enlarged pores. I used this product religiously for 9 weeks and it did nothing for my skin.

this is my only bha product. clears up my skin very well, no irritation whatsoever. no redness no scaling and takes care of my KP to boot. practically this, my sunscreen and either some retinol serum or the brightening tratment and that's my routine!!!! i had neglected my skin for about 6 months and it became dull with clogged pores and blackhead city, in 4 days of continual use (just in the evening) i got my radiant skin back! LOVE LOVE LOVE THIS!!!!!!

Unfortunately, this product did not work for me at all. I didn't notice any improvements in my blackheads or pores. More worryingly, when I applied it (lightly) to blemishes, they dried out to the point of cracking, and now in multiple cases, have scarred. I have never gotten scars from acne before. I thought that the serum might subsequently work to reduce the scarred spots, but have found that it usually makes the spots red and aggravated, and seems to do nothing to reduce their visibility.

I began using this not long ago to fade some age spots and spots leftover from breakouts (seriously?! I'm 45). It has been effective in fading those, and with clearing pores on my nose.

Paula hit it out of the ballpark with this. There's nothing else like it on the market and compared to what the high-end Sephora or department-store brands would cost, it's not expensive at all. I used this a few nights in a row on some sudden breakouts. I have sensitive, fair, breakout prone combo skin. This product got rid of everything in 3 days without a trace of redness, flakiness or dryness. I really can't believe it. I'd tried everything imaginable for a month with no success before this.

I use the BHA 2% gel twice a day which works great for blackheads but didn't do much for my past acne red marks or new blemishes (especially cystic.) Bought this and I can vouch that it starts working from the first application.

I've been using this serum for almost three months and I have not seen any change in my skin. It also causes pimples. When I skip it in my routine I don't break out in tiny pimples. I'm thinking maybe I should try a different type of exfoliant like the AHA's. I am a new devotee of Paula's but this one is a loser...