Hygral fatigue occurs when the hair swells from repeated and excessive swelling and deswelling of the hair cuticle when it takes on water. It is often associated with porosity issues. The process of hair expansion in wet conditions and contraction under dry conditions is both stressful and damaging to the hair fiber over time. Many people don't seem to understand that the only thing that can cause hygral fatigue is water. I don't think calling it overconditioned hair is accurate since hygral fatigue is caused solely by water. Not by conditioning agents. Hygral fatigue can also occur by leaving your cuticle swollen long periods of time because the stress is accumulative. That is why people can experience hygral fatigue by leaving their hair soaking wet overnight or for days on end, because it is causing stress for your hair to have that much water in it for a long time. Damp hair shouldnt't be much of an issue because there would be less swelling of the cortex. For example, when you apply a water based product onto dry hair. Even if the product has water in it (this includes deep conditioners because the issue is water swelling the cuticle NOT the conditioning agents in the products), you will not get hygral fatigue. That is why you can add a cream styler or a deep conditioner to dry hair (do not apply a plastic cap though) and not suffer from hygral fatigue despite leaving it on. The hair is not wet enough and it will dry quickly. The shaft being swelled with water is the issue (which is why coconut oil applied before shampooing can actually help prevent hygral fatigue and lessen the damaging effects of water. Although the coconut oil has to be left on for a good amount of time for it to fully penetrate... I don't remember what the studies say but maybe around 6~8 hours at the least. Also coconut oil like all oils are made up of fatty acids. There are specific fatty acids that penetrate. So coconut oil would be both penetrating and occulsive) and the longer it is swelled at a high extent the more stress is being put on the hair. Specifically the cell membrane complex. Water doesn't seem to damage the other layers of the hair at all (the cuticle) unless you pour boiling hot water on your hair of course. The cell membrane complex is described as material that glues the hair cells together. There are actually various types of cell membrane complexes: cuticle-cuticle, cuticle-cortex and cortex-cotex. So for example the cell membrane complex in the cuticle-cuticle binds the cuticles together. But I believe that the one that is effected by water is the cuticle-cortex cell membrane complex. Despite the natural hydrophobicity of the outer layers of the hair shaft, there are still pathways for water molecules to enter the central cortex through the cuticle layers. That is why high porosity hair (typically caused by damage but can also be caused naturally due to the hair being more susceptible to cuticle lifting and flaking off - along with lipid loss due to high ph levels, uv radiation, hard water, harsh cleansers, etc.) recieves water quickly and abruptly. This is not a good thing. Healthy hair would be low porosity hair. And the hair is trying to slow the rate at which water enters your hair strands to keep it healthy. The abrupt filling of the hair cuticle causes lots of stress as well. Anyway, I say all this too say that what causes hygral fatigue is simply water. Conditioning agents do not cause hygral fatigue so if a person is using a deep conditioner normally they would not get hygral fatigue. They could get hygral fatigue if they are washing their hair often and often leaving in a deep conditioner for hours with a cap on, especially overnight. Or if their hair is staying wet for days. The conditioning ingredients in the deep conditioner have zero ability to damage the hair or make it "over moisturized" that is all water's doing. The gummy feeling that people get would most likely be due to the damage to the CMC. Maybe it's like loosening/melting the glue that is holding it all together and so it starts to feel like your hair is literally melting, especially since the CMC is responsible for hair's elasticity.
Wow thank you so much for this insightful comment! I definitely didn’t know that point about applying coconut oil before shampooing. Very interesting. When I mentioned hygral fatigue, I wasn’t implying that I was worried about getting it. You know when you apply the deep conditioner and your hair feels really soft and malleable when the conditioner is in and after letting it sit? Well I sometimes wish my hair felt like that after rinsing it out (because it never does and I’m assuming it because my strands are strong) but I guess I’m associating that feeling on rinsed out hair with hygral fatigue. Like if my hair felt that soft with nothing in it, I probably would have hygral fatigue. Hope that makes sense. But thanks again - I really loved the scientific aspects of your response.
![[안방1열 풀캠4K] 베이비몬스터 'DRIP' (BABYMONSTER FullCam)│@SBS Inkigayo 241110](http://i.ytimg.com/vi/AQ4RIghEvUs/mqdefault.jpg)
![[Live] : ONE 169 วันนี้!! "อนาโตลี vs อูมาร์"](http://i.ytimg.com/vi/IK3YZVWuFJg/mqdefault.jpg)
Hygral fatigue occurs when the hair swells from repeated and excessive swelling and deswelling of the hair cuticle when it takes on water. It is often associated with porosity issues. The process of hair expansion in wet conditions and contraction under dry conditions is both stressful and damaging to the hair fiber over time. Many people don't seem to understand that the only thing that can cause hygral fatigue is water. I don't think calling it overconditioned hair is accurate since hygral fatigue is caused solely by water. Not by conditioning agents. Hygral fatigue can also occur by leaving your cuticle swollen long periods of time because the stress is accumulative. That is why people can experience hygral fatigue by leaving their hair soaking wet overnight or for days on end, because it is causing stress for your hair to have that much water in it for a long time. Damp hair shouldnt't be much of an issue because there would be less swelling of the cortex. For example, when you apply a water based product onto dry hair. Even if the product has water in it (this includes deep conditioners because the issue is water swelling the cuticle NOT the conditioning agents in the products), you will not get hygral fatigue. That is why you can add a cream styler or a deep conditioner to dry hair (do not apply a plastic cap though) and not suffer from hygral fatigue despite leaving it on. The hair is not wet enough and it will dry quickly. The shaft being swelled with water is the issue (which is why coconut oil applied before shampooing can actually help prevent hygral fatigue and lessen the damaging effects of water. Although the coconut oil has to be left on for a good amount of time for it to fully penetrate... I don't remember what the studies say but maybe around 6~8 hours at the least. Also coconut oil like all oils are made up of fatty acids. There are specific fatty acids that penetrate. So coconut oil would be both penetrating and occulsive) and the longer it is swelled at a high extent the more stress is being put on the hair. Specifically the cell membrane complex. Water doesn't seem to damage the other layers of the hair at all (the cuticle) unless you pour boiling hot water on your hair of course. The cell membrane complex is described as material that glues the hair cells together. There are actually various types of cell membrane complexes: cuticle-cuticle, cuticle-cortex and cortex-cotex. So for example the cell membrane complex in the cuticle-cuticle binds the cuticles together. But I believe that the one that is effected by water is the cuticle-cortex cell membrane complex. Despite the natural hydrophobicity of the outer layers of the hair shaft, there are still pathways for water molecules to enter the central cortex through the cuticle layers. That is why high porosity hair (typically caused by damage but can also be caused naturally due to the hair being more susceptible to cuticle lifting and flaking off - along with lipid loss due to high ph levels, uv radiation, hard water, harsh cleansers, etc.) recieves water quickly and abruptly. This is not a good thing. Healthy hair would be low porosity hair. And the hair is trying to slow the rate at which water enters your hair strands to keep it healthy. The abrupt filling of the hair cuticle causes lots of stress as well. Anyway, I say all this too say that what causes hygral fatigue is simply water. Conditioning agents do not cause hygral fatigue so if a person is using a deep conditioner normally they would not get hygral fatigue. They could get hygral fatigue if they are washing their hair often and often leaving in a deep conditioner for hours with a cap on, especially overnight. Or if their hair is staying wet for days. The conditioning ingredients in the deep conditioner have zero ability to damage the hair or make it "over moisturized" that is all water's doing. The gummy feeling that people get would most likely be due to the damage to the CMC. Maybe it's like loosening/melting the glue that is holding it all together and so it starts to feel like your hair is literally melting, especially since the CMC is responsible for hair's elasticity.
Wow thank you so much for this insightful comment! I definitely didn’t know that point about applying coconut oil before shampooing. Very interesting. When I mentioned hygral fatigue, I wasn’t implying that I was worried about getting it. You know when you apply the deep conditioner and your hair feels really soft and malleable when the conditioner is in and after letting it sit? Well I sometimes wish my hair felt like that after rinsing it out (because it never does and I’m assuming it because my strands are strong) but I guess I’m associating that feeling on rinsed out hair with hygral fatigue. Like if my hair felt that soft with nothing in it, I probably would have hygral fatigue. Hope that makes sense. But thanks again - I really loved the scientific aspects of your response.
I didn’t even know they had heated shower caps lol. I can’t wait to start my natural hair journey
Yessss! It’s microwaveable. I’m sure they have them on Amazon. But yes, I’m excited for you to start too! Your hair will grow soooo much!
@@kaylanatasha13 hopefully 🙏🏽
I never tried it so I might in the future 😊
Yeah it was nice! A little pricey but I loved the smell.
@@kaylanatasha13 heh ty
Try Amika Soulfood Nourishing Mask if you haven't already.
I tried it and surprisingly I didn’t really like it smh! I actually liked the regular conditioner way more than the mask.
I remember using cream of nature deep conditioner back in the day and it used to be really soft after rinsing. Try it one day
Ohhh really? Thanks!! I’ll look into that!
Purelogy, the purple one
I never tried pureology! Is it good?
Yes I can’t finger detangle it does nothing for me! Lol
I knowwww I’m like this can’t be it! Haha
first
pin this plsss