Adapalene
"I started using Differin last January in 2016. It was prescribed by my dermatologist together with antibiotics, and I have to say - it's the best ever! 

I don't know if it was because of the antibiotics, but my acne healed in less than three months and the only thing I had to worry about was the scars. 

The only (common) side effect I had was dry, scaly skin. Doctor told me it was fine during our second checkup, so he gave me moisturiser. (Side note: I've been moisturising my face since young but I didn't dare to aggravate my skin so I stopped) 

And I love the fact that Differin does not discolour clothings and bedsheets. Before this I was using Duac, it was also beneficial to my acne but it discoloured my favourite bedsheet horribly!"