Scars from acne can be either pigment or inflammatory residuals from prior acne or can be true physical scars. Those scars can be depressions, ice pick scars or one of many different thick scars ranging from hypertrophic scars to true keloids. Pigment and inflammation will resolve over time but can be accelerated using topical agents such as Retin A and various bleaching products or using Light Diode or BBL treatments. Physical scarring just needs to be seen in person to assess the proper steps to be taken to reduce the appearance of scars.
How Can I Remove my Acne Spots from my Back?
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Removing acne spots from the back
I presume you're referring to hyperpigmentation that can occur after pimples have left. If so, topical retinol or retinoids can be helpful, as can chemical peels and microdermabrasion. If you're referring to actual scars (e.g. divets/depressions in the skin), then deeper technologies are required like a dermaroller or fractionated laser resurfacing. If you're still breaking out with pimples on your back, make sure you get that under control too. Dr. Benjamin Barankin, Toronto Dermatology Centre.