“No thanks. Sunscreen makes my skin feel all oily.”
You're at a swimming pool with some friends. One of your friends tells you that you should put on sunscreen. You don't want to because you don't like how it feels on your skin. You say this.
No thanks. Sunscreen makes my skin feel all oily.
This is an expression to use when someone offers you something, but you don't want it. Depending on how you say it, "No thanks" can sound angry, cheerful, or anything in between.
If you'd like to be more formal, you can say "No thank you."
Feelings like "oily", "dry", "itchy", "sticky", etc. are felt in your skin. When you talk about these feelings, it's often better to say "My skin feels ___" instead of "I feel ___":
My skin feels kind of dry.
Don't get all impatient.
She likes to act all shy when you first meet her, but within ten minutes she'll be talking your ear off.
He gave me his old computer, but it's all old and crappy.
You can even make positive descriptions sound negative using "all":
Why are you being all nice to me today? Do you want something from me?
Skin that is "oily" is shiny and sticky. Oily skin can be caused by products like sunscreen. It can also be caused by natural oils in your body.