To remove all any kind of fungal infections hitting your skin due to sweat in the summer try and take a shower at least two or three times in a day. Always use talcum powder, Deodorants and roll-ons to keep your skin fresh. Sunscreen is a must for your skin in the summer. So be you hit out in the sun apply good quantity of a good sunscreen all over the exposed areas of your body. Use a good moisturizer and drink a lot of water. There are many packs available to give the cooling effect to your skin. Keep your underarms clean and eat a good diet.