Healthy hair produces a certain amount of sebum, or oil, as a way to hydrate your scalp and protect your hair. The amount of oil you produce varies depending on your hair type, your hygiene habits, and other lifestyle factors. Sometimes this natural oil can collect on your hair, especially at the root.
"Although sebum is good for the hair, too much can make your hair look slick and greasy. Common causes of oily hair are unhealthy eating habits, medications, improper hair care, stress, hormonal fluctuations, and change in weather."
Oily hair isn't healthy or unhealthy by default. People with an oily scalp can have healthy hair or dry, brittle hair. Your hair needs oil to be healthy, but too much oil can lead to buildup on the hair and scalp. Oily skin may also contribute to a condition called seborrheic dermatitis.
Those with fine or thin hair, however, may find their hair looks greasy after just one day. It's all to do with the amount of oil your scalp produces, as well as how well your hair can carry that oil.
People with oily hair or who use hair care products daily should consider washing their hair once every 1–2 days. People with dry hair can wash their hair less frequently. Those with textured or coily hair should only wash it once every 1–2 weeks.
Overproduction of sebum leads to blockage, inflammation, and hardening in the pores. That, in turn, leads to the thinning of the hair with accompanying hair loss. So, oily scalp can cause the hair to fall out faster than it can grow back.
Typically, if you have greasy hair, you should shampoo daily. Washing more than once a day can cause your glands to overreact and produce more oil to make up for the extra shampooing. You'll also want to choose a shampoo that's made for oily hair.
“If you have oily scalp, then daily washing is needed,” she explains. “Sometimes, people think they have dry scalp because they have dandruff, but in those situations, more frequent washing is also helpful.”
“Shampooing your hair twice is beneficial because it allows for proper cleansing, giving you longer periods of time with a clean scalp and keeping away the oily hair problem,” he says. “It also keeps you away from over-shampooing your hair, which is a mistake that most women make.”
Depending on your hair type, you can wait three to five days between washes, and we've got the scoop on how to survive the process while you're waiting for sebum production to slow down. We'll admit, the first two weeks are the most difficult, but after about week four, you should see a significant difference.
Modern lifestyles have led to an increase in anxiety and stress levels, making them one of the most common causes of oily hair. “Stress causes your cortisol levels to rise. Cortisol stresses out the oil glands to produce more sebum, naturally leading to oily hair,” explains Sethi.
Hair growth flourishes from a clean, healthy scalp. The bottom line is that dirty hair doesn't grow any faster than clean hair, so you may as well have a clean scalp and fresh tresses. Your strands will look better, feel better, and be healthier, too.
Sebum decreases
Over time, hair becomes more accustomed to a water-only cleanse, so your natural sebum and hair oils will decrease overtime if you are consistent with a water only routine. Meaning your hair will be less greasy in between wash days.
When to wash. Rossi generally tells his patients they should wash their hair once or twice per week. But if you've had chemical treatments that can make your hair drier — such as bleach, perms or relaxers — you might want to wash it less than once weekly to avoid breaking or brittle hair or split ends, he said.
Greasy hair after washing may be due to a person's hair care routine, an overproduction of sebum, environmental factors, or underlying health conditions. People may be able to stop hair from becoming greasy as quickly by using a gentle clarifying shampoo and lightweight, non-greasy hair products.
The short answer is yes! The slightly less short answer is that an oily scalp definitely contributes to hair loss but is often not the sole cause of it. Excess amounts of oils can trap and attract dirt, dandruff, and product build up, which clogs pores and prevents new hair growth.
Fact: Conditioner is not only OK for oily hair types to use but it's also necessary. It provides a healthy dose of hydration, nourishment, and protection that your locks can't get from shampoo alone.
Vitamin B deficiency is the hidden reason why most of the people have an oily scalp. Vitamin B helps in regulating oil production in your scalp and further manages the pH levels. Not having enough vitamin B can cause excess production of sebum in your hair due to an imbalance in the pH levels.
"A sufficient intake of the B vitamins, particularly of vitamin B2 (riboflavin) and vitamin B6 (pyridoxine), can help combat greasy hair by regulating sebum production," the site explained. The good thing is, B6 is found in a lot of foods including beans, meat, poultry, fish, and some fruits and vegetables.
Many doctors say a daily shower is fine for most people. (More than that could start to cause skin problems.) But for many people, two to three times a week is enough and may be even better to maintain good health. It depends in part on your lifestyle.