The short answer is that not detangling your hair can cause it to loc over time and how fast depends on the texture and style. If you are wearing your hair loose (twist outs, wash and go's, braid outs, etc.), I would not go any longer than a week without combing.
Look Out For Oil Buildup
Brushing your hair can be beneficial in the sense that it distributes oil from your roots (which don't really need it), to your dry ends (which do). Without brushing, you could notice your roots getting greasy faster.
Hair care experts recommend brushing your hair twice a day — morning and night — to help distribute your scalp's natural oils through your hair.
Advocates say that over-brushing damages your hair, leading to split ends and breakages, which could end in hair loss. By not brushing your hair, they say, you allow it to remain strong, healthy and even looking better.
Does Combing Cause Hair Loss? Combing your hair does not contribute to hair loss if you do it right. Make sure your comb is smooth and of good quality. Combs that feel rough, have chips or even micro-cracks can snag hair, pulling it out, or act like a saw which can create breaks in the hair strand.
Sleeping and going out with wet hair cannot give a person a cold. However, doing so may have some disadvantages, including hair breakage and an increase in yeast and fungal overgrowth on the hair. People may decide that they should alter their routine to allow more time for drying their hair.
Hair that's wet and filled with moisture is more fragile than hair that's dry, which can result in snapping when brushed. As such, it's recommended to brush hair in a dry state (guide-to-detangling-curls). This may mean allowing your hair to air-dry post-shower before beginning to comb through hair strands.
The real volume comes around day 3. Remember to pick your hair every day to maintain the look and bring out as much volume as possible.
Aggressive brushing and combing can yank healthy hair from the scalp and split knotty hairs. While finger detangling won't make your hair grow any faster, it will minimize breakage and keep more hair on your head, possibly helping you to retain length over time.
Combing acts upon the capillaries of the scalp, which helps in transporting oxygen and nutrients to the hair follicles effectively, thus, promoting blood circulation in the scalp, nourishing hair roots, promoting growth, and helping reduce hair loss.
Studies suggest deficiencies in vitamins B12 and D, biotin, riboflavin, iron, and other nutrients are associated with hair loss ( 1 ). Eating a balanced diet that is rich in these vitamins and minerals may help promote hair growth, especially if you're experiencing hair loss due to poor nutrition.
Your hair is at its weakest when its wet, as dry hair is protected by the natural oils which coat each hair strand. Clean, wet hair has zero protection, meaning its more prone to split ends and breakage.
You'll Find More Stray Hairs In The Shower
According to Bustle, when you're not grooming with a brush, your natural hairs will buildup and accumulate in the shower. So instead of brushes with strands full of hair, expect some clogged shower drains.
A little oil clinging to your hair strands instantly adds volume. Your hair is fluffed out and looks lusher and thicker. From braids to buns or loose locks, your hair will appear fuller when it's a little dirty.
Not combing or brushing your hair regularly can cause dandruff. Dead skin cells themselves shed in around a month in people without dandruff, while for people with dandruff, dead skin cells shed every 2-7 days.
Combing your hair when it's straight is a normal act that most do every day. But when it comes to natural hair combing your hair on a daily basis can actually lead to breakage.
Finger combing is a very beneficial way of detangling natural hair that consists of using solely your fingers to remove shed hair and tangles from your natural hair as opposed to using combs and/or brushes.
Wooden comb: Stimulates hair growth, reduces scalp infection & hair fall.
It is advised that you should not comb your hair after sunset because evil spirits venture out after sunset. It is the time they are more powerful and it is believed they target women with beautiful and long hair to prey on.
Scalp massages can help improve blood circulation on the scalp and also to stimulate the hair follicles, encouraging healthy hair growth in the process. However, if the practice requires you to pull hard enough to actually pull the strands out of your scalp, then it's a huge no-no.
In most cases, ethnicity has been classified into three groups: African, Asian and Caucasian. It has been reported that Asian hair is generally straight and is the thickest, while its cross-section is the most round-shaped among these three.
Generally, the comb is to be preferred when the hair is wet, because it is able to better untangle the knots without breaking the hair shaft. Instead, the brush is more aggressive on wet hair and it may risk to breake it. However, hair brushes are ideal for removing dandruff residues and massaging the scalp.
The bottom line. Air-drying your hair can be a great way to give your locks a much-needed break from heat-styling. However, if your hair is on the thicker and coarser side, it may be best to start with a protective product and use a blow-dryer to keep your hair from absorbing too much moisture and causing breakage.