Is Hair Smoothening Causing Your Hair Breakage? Expert Insight
- September10 Salon
- Mar 29
- 3 min read
Updated: Mar 30
Introduction:
Hair smoothening is a popular choice for achieving sleek, frizz-free hair, but it’s not suitable for everyone. At September10 Salon, we often encounter clients who are distressed after smoothening, mistaking hair breakage for hair fall. The truth is, smoothening treatments can sometimes cause hair damage, especially for those with thin hair, thyroid issues, or diabetes.
Moreover, it’s crucial to understand the potential risks associated with some of the chemicals used, like formaldehyde. In this blog, we’ll break down the science behind hair breakage after smoothening, why some individuals should avoid it, and how to recover from damage if your treatment has gone wrong.

💡 Why Does Hair Breakage Happen After Smoothening?
Hair smoothening treatments typically use chemicals like formaldehyde, glyoxylic acid, or carbocysteine to break down the hair's natural disulfide bonds and realign them into a straighter structure.
Scientific Explanation:
Formaldehyde: A common ingredient in smoothening treatments, formaldehyde is classified as a carcinogen by the International Agency for Research on Cancer (IARC).
Long-term exposure to formaldehyde can increase the risk of cancer, including nasopharyngeal cancer and leukemia. Additionally, it can cause eye, nose, and throat irritation when vaporized during the treatment process.
Why Breakage Occurs:
The chemical modification causes the keratin structures to shrink, leading to reduced elasticity and flexibility.
Hair that becomes stiff and dry is more prone to snapping and breakage.
The loss of natural moisture and lipids results in dry, frizzy hair despite undergoing a smoothening process.
Misconception:
Frizz after smoothening is often mistaken for a failed treatment, but it’s actually a sign of keratin shrinkage and compromised hair integrity.
🚫 Who Should Avoid Hair Smoothening:
1. People with Thin or Brittle Hair:
Thin hair naturally has less structural integrity compared to thicker hair, making it more vulnerable to chemical damage.
Why Avoid It:
The shrinkage of keratin structures can make thin hair look even flatter and more lifeless.
Breakage risk: The brittle strands are more likely to snap after treatment.
Alternative:
Opt for Hair Botox or Nanoplastia, which are gentler on thin hair and help restore moisture.
Learn More:
2. People with Thyroid Issues:
Thyroid disorders, particularly hypothyroidism, can cause hair thinning, dryness, and breakage.
Why Avoid It:
Hair affected by thyroid imbalances is naturally weaker.
Smoothening chemicals can further compromise hair structure, leading to breakage.
Recommended Treatment:
Go for Hydrating Hair Spa or On Protection Plex Treatment to enhance moisture retention and bond strength.
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3. People with Diabetes:
Diabetes affects blood circulation and nutrient supply to hair follicles, resulting in dry and fragile hair.
Why Avoid It:
High blood sugar levels lead to moisture loss, and smoothening exacerbates dryness.
Reduced scalp health makes hair more prone to breakage and shedding.
Alternative:
Choose low-chemical, moisturizing treatments like Plex or Hair Botox.
Related Blog:
✅ Why September10 Salon’s Treatments Are Safe:
At September10 Salon, we prioritize safe, high-quality treatments that deliver results without compromising your hair’s health.
Our Hair Botox and Nanoplastia treatments use gentle, scientifically formulated ingredients that enhance hair quality without the harsh effects of high-concentration chemicals.
Unlike generic smoothening products, our formulations are designed to nourish and strengthen while providing the desired smooth and shiny effect.
🛠️ Fixing Hair Breakage After Smoothening:
If you’ve experienced breakage after smoothening, follow these recovery steps:
1. Deep Conditioning with Protein:
Use a repair mask with hydrolyzed keratin to strengthen weakened strands.
Recommended: On Protection Plex Treatment at September10 Salon.
2. Gentle Cleansing Routine:
Switch to a sulfate-free, protein-rich shampoo to maintain moisture.
Try pH-balanced products to protect the hair cuticle.
Related Blog:
3. Limit Heat Styling:
Heat exacerbates the damage from keratin shrinkage.
If styling is essential, always use a protectant serum to create a barrier.
💡 Final Thoughts:
Hair smoothening can deliver a sleek, straight look, but it’s essential to know if it’s right for your hair type and health conditions. While some chemicals used in smoothening can cause damage, September10 Salon’s safe formulations ensure that your hair stays healthy and resilient.
If you’ve experienced hair breakage after smoothening, visit September10 Salon for a professional consultation and recovery plan. Our experts will assess the damage and suggest the best repair treatments, including On Protection Plex and Hair Botox.
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