I really love these tints. These are the first tints from etude house that really caught my attention.
Application wise: I love that they are quite moisturizing. They also have a slight glossy finish, giving your lips the plumping effect and makes them look "juicy". The colours seem pretty vibrant on the hand but blend into your lips very nicely when applied, doesn't look unnatural. I'm normally wary of bright tints for that reason, but these are quite flattering.

I ended up getting 3 colours, gr701, pk014, and rd305.
pk014 is my favorite out of the bunch. It is quite similar to rd305 but pk014 has more pink tones while rd305 has more red tones. I normally don't like pink but pk014 looks so pretty on the lips. I tend to alternate between rd305 and pk014.

I also like gr701, it is quite a unique colour; starts out mint then turns violet-fuchsia colour. It gives me a light wash of fuchsia on the lips, not too intense, and I like to throw it on to give some colour to my lips.

Btw these also strain REALLY well. Almost too well. I swatched these on my hand and then they stayed there the rest of the day.

Overall these tints are great! Quickly became favorites of mine. Probably will buy some more colours hahaha.