Those annoying little white bumps often found on the backs of your arms are called keratosis pilaris and are caused by a build-up of the protein keratin in your skin. You can get them on other parts of your body too, and they are stubborn.
I suggest a two-pronged approach: in the shower, use a body exfoliant that contains both glycolic and lactic acids to help slough off dead skin and dissolve the bumps. In the evening, make sure to swipe the affected area with a texture-correction pad that contains alpha-hydroxy acid, like the ones from dr.dermal, to help smooth skin.
If you don’t have a body exfoliator, cheat with the one you use on your face:
Ask Juana: ‘I know I should be using sunscreen every day, but exactly how much is the correct amount?’
Studies have shown that most people don’t apply enough sunscreen! The rule is about 2mg of sunscreen per square centimetre of skin. That translates to roughly a full shot glass of sunscreen applied to exposed areas. A teaspoon-sized amount should be applied to your face and neck alone.