Glycerin is a humectant, meaning it attracts and retains moisture. While it can be beneficial for some skin conditions, glycerin is not generally considered good for acne.
Acne is caused by clogged pores, excess oil production, and bacteria. Glycerin can actually worsen acne by trapping moisture and potentially clogging pores further. This can lead to more breakouts, especially if you have oily or acne-prone skin.
However, some studies suggest that glycerin can be beneficial for acne in certain situations. For example, glycerin-based products can help to keep skin hydrated, which can be helpful for people with acne who experience dry skin.
Ultimately, whether or not glycerin is good for your acne depends on your individual skin type and the specific product you are using. If you are concerned about acne, it is always best to consult with a dermatologist.