Salicylic acid is a BHA, or beta hydroxyl acid, and chemical exfoliator. Chemical exfoliation is much less harsh on your skin than physical exfoliation is and can be more effective. BHA’s help remove layers of dead skin, and help unclog pores. BHAs are also known for being quite drying. BHAs are typically preferred for oily, acne prone skin due to these properties. They are great for treating blackheads and white bumps on your face because of their antibacterial and anti-inflammatory properties. Those suffering from Rosacea might also want to try incorporating a BHA into their routine to even out their skins texture.
There can be minor irritation associated with the use of BHAs, so it is very important that you remember to moisturize your skin after use, even if you have oily skin. BHAs have been shown to work better in lower concentrations so that they do not cause too much irritation. As with any skincare item, you should patch test (more on this in the How To Patch Test section) to ensure no reaction takes place. Purging can also take place when using this product so make sure you know the difference between purging and having a reaction (more on this in the Purging vs. Having A Reaction section).
If you want to layer your AHA and BHA treatments, put the AHA on first and BHA second. BHA’s do not cause as much photosensitivity as AHAs so they can be applied in the morning or at night (or both).