Many of us produce more oil when it's warm because the heat increases oil production in our sebum glands. If you feed your dry hair heavy treatments, excess oil in that product can lead to bacne when your strands touch your skin. Stay away from silicones and sulphates in your haircare products, and stick with gentle brands like Aubrey Organics.
Keep your hair tilted while you wash and condition your mane. This keeps it off your body, which protects your back. After you shower, style with a towel to avoid any drippage from damp strands. My secret is using the same moisturising agent on my hair that I do my face — coconut oil will hydrate both.