Our top pick for the best overall hair growth conditioner is the Redken Extreme Length Conditioner. This formula is enriched with amino acids, citric acid, and arginine, which blend together to ward off all types of damage — including more extreme situations — while also providing an ideal environment for hair growth.

How does deep conditioning work? It gives your hair a big hit of moisture or protein, helping to strengthen your hair at the cuticle. A mask can reduce breakage and split ends, improve elasticity, and keep your hair healthy.

Depending on the condition of your hair, you should use a deep conditioning treatment around once a week. However, if your hair feels dry and stressed, you can use them up to 2-3 times a week.