In short
- Split ends cannot be permanently repaired — only cut off.
- Sealing products (silicones, polymers) mask split ends temporarily.
- The average Londoner needs a dust (0.5–1cm) every 8–10 weeks to prevent splits climbing the shaft.
- Once a split has climbed 2cm+, the entire length needs a graduated cut.
Nothing permanently repairs a split end. Products that claim to 'seal' or 'mend' them work for a wash cycle then let go. The only real fix is scissors — and used regularly, scissors are cheap.
Why splits happen
The cuticle scales at the tip get lifted by daily friction — brushing, towel drying, sleeping on cotton, heat styling. Once lifted, the two halves of the cortex separate and travel up the shaft.
Prevention that actually works
- Silk or satin pillowcase (£25–£60 pays for itself in months).
- Microfibre or old T-shirt drying, not cotton towels.
- Detangle from ends up, wet-brush or wide-tooth comb only.
- Regular 'dusts' at the salon (0.5–1cm off, £15–£30) every 8–10 weeks.
- Air dry to 80% before heat styling.
What sealing products actually do
Silicone-based serums glue the cuticle down temporarily, giving a smoother look and feel. They wash out in 1–3 shampoos. Fine to use for polish, useless as a permanent fix.
The cheapest hair repair on earth is a pair of hairdressing scissors used every ten weeks.
Frequently asked
Common questions
Do split-end serums really seal splits?+
Cosmetically yes, structurally no. The split reopens after washing.
Can I trim my own split ends?+
Only if you're skilled and cut individual splits with sharp shears. Otherwise a salon dust is £15–£30 and safer.
Are split ends caused by shampoo?+
Very rarely. Almost always it's mechanical friction and heat.
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