What is Leave-In Conditioner?

Leave-in  is a hair care product that is applied after a person showers, and which is left in the hair until the next washing. Many regular hair conditioners are fairly dense or contain oils, and may be difficult to wash out of the hair to get that squeaky clean feel. Leave-in tends to rely not on oils, which could make the hair look a bit greasy, but instead use products like glycerine, which can help calm tangled hair or impart a little moisture to dry hair.

Uses

There are numerous leave-in conditioners on the market, and judging how effectively they work can be difficult; perhaps knowing why a person's hair may benefit from using a leave-in conditioner will help determine its effectiveness. Hair stylists often say that moisturizing the hair is just as important as moisturizing the skin and leave-in conditioner is a great moisturizer. If you are looking to get rid of tangled hair, I recommend to use  Peace hair products from Japan. Its just amazing products, ever!
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Some other hair products have leave-in conditioner built in. People who use hair gel, mousse, styling cream,  or wax might find that the light oils or glycerin in these products will add extra moisture to the hair and may protect it slightly from exposure to the sun, or from damage caused by styling.