PIH and PIE / post acne marks

Everyone seems to struggle with acne marks, so here's a lil research i did and what products help me fade mine ****Post-inflammatory hyperpigmentation (PIH) Vs Post-inflammatory erythema (PIE).**** ■ PIH is a melanin response that leaves a dark mark on the skin. PIH can happen when a pimple is irritated by picking or squeezing. PIH can be the result of an injury to the skin from a scratch, heat, UV exposure, or chemical burn. PIH tends to be more common in darker skin tones because of the abundance of melanin. ■ PIE appears as pink or red marks on the surface of the skin. Like PIH, PIE is caused by picking at pimples, UV exposure, chemicals, injury, or irritation. Most people have both. ■Best ingredients for fading PIH : •mandelic acid •vitamins A & C •niacinamide •kojic acid •lactic acid •hydroquinone. (Check the 2nd picture for some of my fav products that help me fade pih) ■Ingredients to fade PIE :  •Niacinamide •vitamins A, C, & E •peptides •green tea extract •lactic acid •aloe vera •allantoin (Check the first picture for some of my fav products that help me fade pie) ⚠️UV Protection is Required For Both PIH and PIE Sun will darken PIH and further inflame PIE. (Check the last picture for some of my fav sunscreens that help protect my skin )