I have a yellowish undertone (1st: Autumn warm skin tone, 2nd: Spring warm skin tone), and the color of 21N1 was perfect for me! I'm always concerned about acne scars and blemishes, but the moment I applied it, the roughness disappeared, and even though it was thin, it left my skin with a beautiful, radiant finish. I used it in combination with a primer and powder from another company, and it didn't break down too much even when I wore a mask, and it didn't dry out my skin, so I would recommend it for combination skin in the winter.