I am 47 - my skin is in good condition - I don't have many fine lines and am often mistaken for a good 10 years younger - I double cleanse every night and most mornings - but I think I need to add something else into my routine - but what - I use a oil at night under my moisturiser.
I keep hearing about acids and retinol etc, but I don't know where to start - I have tried listening to Caroline Hirons on insta but she is on for hours and I get sick of the constant hello's.