A daughter stressed out because of back acne

Developed on the back and chest as puberty begins

Acne is still ongoing even now that I am an adult.

It is. Redness caused by touching or friction with underwear.

Even pigment stains remain, making the back look dirty.

I overlooked it because it's not in a prominent place like the face or eyes.

Stress every time I wear a swimsuit while swimming

I have to receive it. My husband also has back acne, and it looks like a scar on his back.

It looks mottled, maybe it's geneticㅠㅠ