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Have you ever wondered what’s secretly damaging your hair?

Harvard-trained, board-certified dermatologist and skin cancer surgeon Dr Neera Nathan, based in Massachusetts, shared videos about the things she would never do to her hair – from air drying her locks to getting a Brazilian blowout. 

While some advisories were expected, like avoiding harsh treatments that include formaldehyde, other aspects shocked her skincare-obsessed fans.

‘If you have been following my journey, you know I have struggled with hair loss. Here are things I would never to do my hair to keep my scalp healthy and to promote hair growth,’ the expert told her 94,000 TikTok followers.

Harvard-trained, board-certified dermatologist and skin cancer surgeon Dr Neera Nathan, based in Massachusetts, shared videos about the things she would never do to her hair

Harvard-trained, board-certified dermatologist and skin cancer surgeon Dr Neera Nathan, based in Massachusetts, shared videos about the things she would never do to her hair 

'I would never hair train, she announced,' which is not washing your hair for a period of time

Dr Neera advised against using olive oil on the scalp, which causes dandruff

Dr Neera advised against hair training, or not washing your hair for extended periods of time, and using olive oil on the scalp, which causes dandruff

The dermatologist outlined what she would never do as part of her hair journey, from air drying to getting a Brazilian blowout

The dermatologist outlined what she would never do as part of her hair journey, from air drying to getting a Brazilian blowout

Beauty breakdown! What Dr Neera AVOIDS 

  1. Don’t hair train – make sure to wash your hair regularly to avoid product buildup, dead skin cells, inflammation, and hair loss
  2. Avoid olive oil – using oil on your scalp causes dandruff
  3. Don’t get a Brazilian blowout – the harsh treatment uses formaldehyde, which can cause cancer 
  4. Stop air drying – it can cause the hair shaft to swell, which may make it more prone to breakage
  5. Don’t do tight hairstyles – pulling back the hair can lead to hair loss
  6. Never swim in a chlorinated pool without a swim cap – it strips the hair of moisture 

Dr Neera shared two separate videos spotlighting six things she would never do if she wanted to keep her hair healthy and lustrous to prevent it falling out in clumps. 

‘I would never hair train,’ she announced, which is not washing your hair for a period of time so your hair gets used to only being washed once weekly and goes back to a natural, healthy state. 

‘Going longer than a week without washing your hair may be okay for your hair strands but it is horrible for your scalp. All that product buildup, dead skin cells and oil can lead to inflammation, hair thinning or hair loss,’ the dermatologist continued. 

‘Instead, limit shampoo to roots to cleanse scalp while retaining moisture in hair strands,’ she wrote over the video.  

Dr Neera would also never use olive oil on her hair or scalp, even though some beauty influencers swear by the pantry ingredient. ‘Olive oil creates a breeding ground that causes dandruff, which can effect hair growth,’ Dr Neera advised. 

The expert also warned against a Brazilian blowout, a harsh professional straightening done professionally, which contains formaldehyde, a known carcinogen. 

‘It can damage the hair follicles and lead to scarring, which can cause permanent hair loss,’ Dr Neera cautioned. 

Not everyone agreed with her expert tips. One person wrote, ‘Brazilian blowout has been the best decision I’ve ever made,’ as another agreed, ‘Brazilian blowout has made my hair so much better.’ The skin surgeon responded, ‘If it works for you great – I would make sure it doesn’t have formaldehyde in it which can cause cancer.’

Dr Neera warned against a Brazilian blowout, a harsh professional straightening that contains formaldehyde, a known carcinogen

Dr Neera warned against a Brazilian blowout, a harsh professional straightening that contains formaldehyde, a known carcinogen

Followers were split on the Brazilian blowout, and many swore by the treatment while others agreed that it caused hair loss

Followers were split on the Brazilian blowout, and many swore by the treatment while others agreed that it caused hair loss 

However, some people struggled with the expensive straightening procedure, which costs from $300 to $500, with one woman saying, ‘Omg I agree on the Brazilian blowout my hair is falling so much because of that.’ 

Dr Neera’s tip to wash hair more frequently proved controversial as well, with one person chiming in, ‘As a person with very long relaxed hair, frequent washing is a big no for me.’ 

In a separate video on the same topic, the dermatologist added three more things she’d never to her hair, including air drying. 

‘I would never air dry my hair, air drying your hair can cause the hair shaft to swell, which may make it more prone to breakage,’ the derm explained.

Many commenters took issue with the lack of air drying, since most stylists say using too much heat causes damage. 

Many commenters took issue with the lack of air drying, since most stylists say heat causes damage

Dr Neera also suggested avoiding tight hairstyles, which can lead to hair loss

Dr Neera said she’d never air dry her hair, which caused plenty of controversy in the comments section

‘Lol what? Air drying is better than using a hair dryer or any sort of heat. Been doing it since childhood and again no issues,’ one person responded. 

‘Can you talk more about air drying hair?? I’ve never heard this was bad,’ a concerned commenter asked before Dr Neera wrote back, ‘I know I was shocked when I learned this!

‘The excess water causes the hair strands to swell and then makes the hair delicate and more prone to breaking.’ 

‘I don’t understand the air hair drying part when a hairdryer was created for convenience,’ another beauty lover wrote. 

‘What? How am I supposed to dry my hair. That’s ridiculous,’ a disgruntled commenter agreed.

‘Strange, I air dry my hair every time and have very long and healthy hair,’ another comment read.’  

Dr Neera would also never swim in a chlorinated pool without a swim cap because 'chlorine can really strip our hair of moisture'

Dr Neera would also never swim in a chlorinated pool without a swim cap because ‘chlorine can really strip our hair of moisture’

Dr Neera continued, ‘I would never wear very tight hairstyles.’ 

The dermatologist explained, ‘You’re pulling your hair back could cause traction alopecia, which could lead to permanent, irreversible hair loss.’ 

Dr Neera would also never swim in a chlorinated pool without a swim cap because ‘chlorine can really strip our hair of moisture.’ 

So, if you’re looking to revive lackluster locks that are falling out, Dr Neera’s tips could prove useful.  

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This post first appeared on Daily mail