There are many types of acne marks on the chest, the common ones are post-inflammatory capillary dilatation, hyperpigmentation and hyperplastic or atrophic scarring, etc., which need to be treated according to the cause, and the treatment methods include medication and physical therapy. 1. Post-inflammatory capillary dilatation: If post-inflammatory erythema triggers acne marks on the chest, it is recommended to use allantoin, dipotassium glycyrrhizinate and other products to help soothe and fight inflammation. Also take pulse dye laser, intense pulsed light and other ways of treatment, can help destroy capillary expansion, improve local symptoms. 2. Hyperpigmentation: For people with localized residual acne marks caused by hyperpigmentation, topical hydroquinone cream, azelaic acid, tranexamic acid and other medications can be used as prescribed by the doctor to lighten and eliminate acne marks. 3. Proliferative scar: If it is proliferative scar, liquid nitrogen freezing, local injection of tretinoin and other methods can be taken to make the scar atrophy. 4. Atrophic scar: If there is atrophic scar on chest, you can take fractional laser treatment, which is based on the principle of photothermal effect, the laser will be divided into a number of beams, and act on the chest scar, which helps to remove acne marks. There is no one way to remove acne marks on chest, so patients are advised to go to regular hospitals to consult doctors and choose the right way to remove them under doctors’ guidance.