How Fast Will My Hair Grow in a Week?

Medically Reviewed on 11/20/2025

How fast does hair grow in a week?

how fast does hair grow
How fast hair grows depends largely on genetics, hormones, and nutrition.

Most hair strands grow at an average rate of about 0.3 to 0.4 mm a day. So, this means it may grow up to one-tenth of an inch or a little more in a week. However, this growth differs with people.

All of the following play a role when it comes to the health and growth of hair:

An average person loses about 50 to 100 hairs every day and grows the same amount.

Any physical or emotional stress or deficiency in iron, biotin, and vitamin D can negatively affect hair health (growth and density of the hair).

How to make your hair grow faster and thicker

The most important factor in healthy hair, other than genetics, is diet. Many individuals experience hair loss when they indulge in crash diets or rigid fasting for weight loss. A diet rich in the following is essential to hair health:

Other tips, such as shampooing hair only two to three times a week, using special filters in the shower if the area supplies hard water, and avoiding hot water head baths, all help to keep the scalp healthy.

  • Avoid brushing and combing wet hair, and use a wide-toothed comb when possible.
  • Always condition the hair after washing it.
  • Tight hairstyles, braids, buns, or ponytails can cause hair loss and bald patches.
  • Using curlers, hot irons, colors, hair rebonding, and straightening can affect hair density and damage hair follicles.
  • When the tips of the hair are persistently dry, they split (split ends), resulting in breakage and, thus, thinning of hair.

If a person is on prescription pills for acne, they may experience severe hair loss. Talk to the skin specialist regarding hair supplements to counteract the same.

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What can I rub on my scalp to make my hair grow?

Treating the underlying cause of hair loss, such as nutritional deficiencies, is essential for healthy hair care and hair growth.

Minoxidil

The U.S. Food and Drug Administration has approved topical minoxidil (Rogaine or Regaine) as an over-the-counter drug for hair loss.

  • It comes in liquid, foam, and shampoo forms in 5 or 10 percent concentrations.
  • The medication must be applied to the scalp two times a day for the best results.

Minoxidil can help regrow about 10 percent of the lost hair when it is applied regularly. It is contraindicated in individuals younger than 18 years old, during pregnancy, and in nursing mothers.

Hair serums

Other than minoxidil, various over-the-counter products can help with hair loss. Serums containing ceramides, urea, and lactate are often used to hydrate the dry scalp and reestablish its pH level to prevent hair loss.

Hair oils

Oils, especially argan, virgin coconut, almond, and olive oil, when rubbed on the scalp, can help promote hair growth cycles due to the massaging action, which stimulates dormant hair follicles. A homemade hair mask using egg yolk and a teaspoon of olive oil, and honey can be applied to the hair for 10 minutes and covered with a warm towel. It helps make healthy hair soft and shiny and relieves dry scalp.

Medically Reviewed on 11/20/2025
References
Mayo Clinic. Mayo Clinic Q and A: Treating hair loss. https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-treating-hair-loss/