[Routine Help] Want to try some products from The Ordinary but not sure what

Beauty Tips For Body Care
I'm 22 female. My skin is sensitive and dry with hormonal breakouts in my chin once a month.Current routine is very simple which is wash with water (AM) or cream cleanser (PM).AM: - Wash with water - Origins Ginzing moisturiser - The Body Shop Skin Defence SPF 50PM: - Wash with La Roche-Posay cream cleanser (and Garnier micellar water for eye makeup) - Soap & Glory Beauty Accelarator night creamAs you can see it's a very simple routine. I would like to add a serum or treatment to my skin but somehow despite studying for a Biology degree skincare ingredients are so complicated to me.I've discovered The Ordinary products and want to try some things from them as they're very inexpensive. I would appreciate recommendations of what product would best slot into my current routine and benefit my skin type and age.Also is 22 too young to start using retinoids? If not, is there anything I should know about them before starting?Thank you!
Girls Blog 2015
Submitted by alessiaxo