Echo, yes it’s true you need 10%. That’s a very difficult concentration to find in skincare products – especially because the concentration on the packaging isn’t always the right one.

Glycolic acid is pH dependant. The Ordinary uses 7% glycolic acid at a ph of 3.5-3.7. This means that 4.4% survives at this pH. This is what they mean with free.

Glycolic acid is a good exfoliant, but if you want it to boost collagen, you’re better off going for peels at your dermatologist every 3/4 months.

Amy & Gio, I like so many of the Alpha Skin Care products. They also have a glycolic acid & hydroquinone cream. Less $$ than Paula’s Choice. The Ordinary 7% glycolic is a winner, too!

Sha, glycolic acid thins shin at the beginning and thickens it in the long run. That’s why it’s recommended to wear sunscreen every single day if you use glycolic acid. Most exfoliants will thin your skin at first though as they work by removing a layer of dead cells. Just use once or twice a week (at your age, you don’t need much more) and wear sunscreen in the morning and you’ll be fine.

Kathy, I hear ya! I love Drunk Elephant but I wish it were cheaper too. The reason I recommend it for oily skin is because it’s one of the few products I know that has both glycolic acid and salicylic acid. Imo, if you have oily skin and have to choose between the two, go with salicylic. But if you want to use both, you can buy two separate products. The Ordinary Salicylic Acid and Glycolic Toning Solution are a cheap way to incorporate both into your skincare routine.