I literally never knew I needed this in my life, I bought it on a whim because I thought 24K sounded kewl and omg it makes my skin feel a little tighter after using (I can tell because I try smiling and it feels firmer, I am young but have deep smile lines and this makes them look less deeper if that makes sense) MY SKIN looks SO GOOD I apply every night before sleeping as my only night time skincare and OMG MY SKIN LOVES ME It definitely is getting better looks a lot softer and feels better( I am also using some other products on here in the morning, specifically I use MAY&MARY tree tea oil serum after shower and etude house eyelash serum both very good but that's about it for my skin besides sunscreen)