Tretinoin
"I am 16 years old andand I am a junior in highschool I started using the acne cream in 9th grade but I stopped over the summer & was on & off during me 10th grade year(I just lost track) but my overall experience is great I love it my only problem is that after a couple of day my chest gets sorta like a rash & it turns really red & hurts. And my face gets painfully irritated. But I have made an appointment to follow up with my dermatologist so yeah. But overall its a really great cream"