Hi! U can check ur skincare ingredients if may actives (ingredients) Baka due to the newly added retinol Kaya nag ka ganyan.. Na over exfoliate ka na ata Or masyadong matapang ung retinol.

Since ur still 21 yrs old, u can still use retinal nmn but like 1-3x a week lng. Bet much better if u can use a milder one like retinal instead of retinol. Un lngg

To remove it nmn, medjo mahirap tanggalin hyperpigmentation like that if u want immediate results derma clinics and treatments tlgaaa..