Perhaps those with curly hair are most familiar with the concept of leave-in conditioners. They are so crucial to hair care because if you ever want to comb out or straighten your hair, you must first use a leave-in conditioner. If you don't, you actually can break and tear your hair. To prevent this misfortune, you may want to try Curly Hair Solutions Silk Leave-in Conditioner (average price; $16.50). This leave-in smoothes out rough cuticles to give hair a clean, soft feel. Plus, the non-greasy formula helps counteract the harmful effects of humidity on curls while at the same time reducing buildup and keeping your hair from feeling heavy.

If you're looking for a cream formula, Garnier Fructis Sleek & Shine Leave-in Conditioning Cream (average price; $4.29) is for you. This product offers frizz control and smoothness for the whole day. And what girl couldn't use a bit of sleek and sheen? It also works to defend against the effects of humidity on your curls with Garnier's potent fruit micro-oils (avocado and apricot oils, to be exact). It's all topped off with vitamins B3 and B6 for health and vitality. If you are looking for manageable curls, protection from the environment and a blast of natural scent, this product may just be for you.

Straight or Normal Hair

Even if you don't have one of the more trouble-prone hair types, your mane could still use a little moisture every now and again, or every day, if you prefer. For this purpose, consider using Bumble and Bumble Leave In (Rinse Out) Conditioner (average price; $22). Don't let the name fool you. This product can be used in the shower as a detangler or it can be left in to weightlessly moisturize and soften hair. To use as a leave-in, just put a dab on hands, then style through hair with fingers.

For another option, you could try Biotera Leave-in Conditioner for Normal to Dry Hair (average price; $6.79). Its conditioning formula features herbal extracts to strengthen weak spots in hair. This leave-in treatment provides immediate results and increases manageability. If you need a nice wake up in the morning, it refreshes your scalp while at the same time smoothes hair from the cuticle. An added plus-its wonderful scent!