Yes, drinking alcohol and caffeine in the summer can have a negative effect on your skin. Alcohol can dehydrate the body, which can lead to dry and dull-looking skin. It can also increase inflammation in the body, which can exacerbate skin conditions such as acne, rosacea, and psoriasis. Alcohol also damages the liver, which is responsible for detoxifying the body and keeping the skin healthy. Caffeine can also dehydrate the body, which can lead to dry and flaky skin. Additionally, caffeine can disrupt your sleep patterns, which can lead to dark circles under the eyes and a tired-looking complexion. To keep your skin healthy during the summer months, it's best to limit your alcohol and caffeine intake. If you do choose to drink alcohol or caffeine, make sure to drink plenty of water to stay hydrated and protect your skin. You can also try swapping out alcoholic or caffeinated beverages for healthier alternatives such as herbal tea, coconut water, or fruit-infused water.