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There are many reasons like harmonal imbalance due to age, excess of oil (sebum) glands secreations, using wrong cosmetics, due to stress etc. i suggest you consult a dermatologist and go through proper treatments like derma fix, derma pen or roll and use the product according to your skin type.
To determine what is breaking out or clearing up your skin keep track of your diet, hygiene habits, and monthly cycles if female and note any patterns. Foods, supplements, cleaning habits, and hormonal cycles commonly affect the skin.
You should not keep your skin dry, you need to moisturise it regularly/and after bathing. The skin spores should stay open, thus it requires reguar washing to make sure they are not blocked this will alleviate the accumulation of fats and dirty under the skin. I recommend regular physical exercise that makes sweat.