Comedones are a type of acne lesion that can be open (blackheads) or closed (whiteheads). When it comes to skincare products, it's important to look for non-comedogenic ingredients, which are less likely to clog pores and cause breakouts. Some ingredients, such as salicylic acid, benzoyl peroxide, and retinoids, are known to be effective in treating and preventing comedones
. On the other hand, some ingredients have been found to be comedogenic, meaning they have the potential to cause comedones or irritate the skin surface. These ingredients are given a comedogenic rating on a scale from 0 to 5, with 0 being the best (no comedones/irritation) and 5 meaning the ingredient has a good chance of causing problems
. It's important to read labels, learn which ingredients are notorious for being comedogenic, and test products on your skin carefully to avoid potential breakouts