Common wet hair mistakes
Drying or combing your wet hair excessively is a recipe for disaster. Also, rubbing your wet hair repeatedly with a towel will leave it dry and frizzy. Instead wrap a dry towel around your head and let it soak up all the water.
Using products after expiration
By using products way past their expiry date, you risk getting allergies and infections. Even if you love the red lipstick from college, don't cling to it. It is advisable to replace products every few months, especially mascaras and lipsticks.
This is a classic beauty mistake. Too much conditioning is not advisable. Use a generous dollop of conditioner once a while but avoid using it on the roots.