nice article

https://www.acne.org/does-salicylic-acid-make-your-skin-more-sensitive-to-the-sun.html

I would like to comment on this claim in the article:

''Salicylic acid, while only moderately improving acne, remains a popular anti-acne ingredient in over-the-counter skin treatments and makeup because it fights acne with multiple "weapons''

I found salicyclicacid very effective (only look at the list of things it does in the article), though I believe the concentration used in over the counter products is too low with often only around 1%. And the product must have the right pH to be effective. For this reason, burying around 1% of salicyclic acid in for example a moisturizer with tons of other ingredients doesn't work.

I had my pharmacist make a gel with 6% salicyclic acid as main ingredient (still safe for skin) and have been surprised by how well it works purifying my skin almost instantly.