Grooming Tip No. 2: If you have weak edges from heat styling or from pulling your hair back into a tight pony tail, use Vitamin E capsules. Vitamin E is essential for growing your hair and skin. â€œThat is one of my favorite tips,â€ says Wright. â€œIt really works. Iâ€™ve used it on all my clients.â€ Pop open a capsule and rub a little bit of Vitamin E on your edges or throughout your whole head to keep hair nice and strong.