BB glow is a treatment that uses a serum that is applied to the face with a microneedling device. The serum contains a substance called BB cream, which is a type of foundation that is used to even out skin tone and provide coverage. The treatment is said to be effective in reducing the appearance of wrinkles, fine lines, and dark spots. There is no evidence to suggest that BB glow is harmful. In fact, the treatment is said to be safe for all skin types.