lukewarm water. Repeat every week. 5. Cider vinegar to fight against acne Apple cider vinegar is a good way to fight acne. Make a simple mixture with a small cup of cider vinegar for three small cups of water. Clean your skin with a cotton swab moistened with this mixture and then apply a moisturizer. Be careful, this recipe should not be used every day but only from to time, the vinegar being too aggressive on a daily basis. 6. The avocado for dry skin If you have dry skin, you can regularly make an avocado mask.