Quick answer: the best shampoo for hair extensions is a gentle, sulphate-free and silicone-free formula that cleanses without stripping the hair or loosening bonds and tapes. Wash the roots gently, keep conditioner and oils on the mid-lengths and ends (never on bonds, tapes or wefts), detangle carefully and keep heat low. The same rules apply to human hair wigs. Always follow your extension specialist's aftercare advice first.
Hair extensions are an investment, and the products you use at home make a real difference to how long they last. Extension hair doesn't get any natural oils from your scalp and can't repair itself, so harsh cleansers, heavy build-up and too much heat take their toll faster. Here's what to look for and how to wash them properly.
Why extensions need a different shampoo
- No natural oils: extension hair isn't fed by your scalp's sebum, so it dries out more easily than your own hair.
- Bonds and tapes are delicate: harsh cleansers, oils and heavy conditioner at the root can weaken adhesives and bonds, causing slipping.
- Coloured hair: most extension hair has been coloured or lightened, so it fades and dries out like colour-treated hair.
- Build-up: heavy, film-forming products can leave hair limp and tangly, and are hard to wash out without scrubbing.
What to look for in a shampoo for extensions
- Sulphate-free: milder cleansers lift dirt and oil without stripping the hair. Our guide to sulphate-free shampoo explains how to check a label.
- Silicone-free: no film to build up on the hair or around bonds.
- Gentle and low-residue at the roots: especially important for tape-ins and bonds.
- A matching conditioner for the lengths: to put back softness and moisture where extension hair needs it most.
The best Insight shampoo and conditioner for hair extensions
Our top pick: the Rebuild range. Rebuild is the range Insight's UK education team recommends for extensions. Lorraine Matic, Head of Insight UK Education, recommends it because extension hair is almost always coloured or lightened and can't repair itself, so it needs gentle cleansing plus strength and moisture.
- Rebuild Replenishing Shampoo is sulphate-free and silicone-free. It cleanses gently while phyto-keratin and brown and red algae help strengthen the hair fibre, prevent breakage and add a glossy, glass-hair finish.
- Rebuild Replenishing Hair Conditioner is silicone-free, with brown and red algae and organic avocado oil. It detangles and softens without weighing hair down. Use it on the mid-lengths and ends only, never on bonds, tapes or wefts.
- Replenishing Thermal Care Serum completes the range: a silicone-free heat protector for the lengths before styling.
Rebuild is vegan, cruelty-free and dermatologically tested.
Other options for different extension types
All of these are sulphate-free and silicone-free, vegan and made in Italy.
For oily roots or very sensitive tapes: Gentle Moisture Shampoo. A mild, sulphate-free shampoo with no oils in the formula, so it leaves no residue around tapes and bonds. Organic witch hazel helps calm the scalp and balance oil.
For clip-ins, wefts and human hair wigs: the Melted range. Concentrated, sulphate-free shampoos built on gentle isethionate cleansers with plant oils and butters for extra softness. Because they're richer, they're ideal when you're washing hair off the head, or for focusing on the lengths.
For curly extensions and wigs: Pure Mild Shampoo. A sulphate-free shampoo made for curls, with nourishing plant oils to keep the curl pattern soft and defined. Concentrate it on the lengths rather than right at the bonds.
Why conditioner matters for extensions
Conditioner matters even more for extensions than for your own hair, because extension hair can't replace lost moisture. Blot the hair first so the conditioner isn't diluted, apply it from the mid-lengths to the ends, and keep it away from bonds, tapes and wefts, where it can cause slipping. While it's in, brush through gently with a soft detangling brush: the conditioner helps the brush glide, so this is the easiest time to work out tangles. Then rinse with cool water.
How to wash hair extensions (tape-ins, bonds and wefts)
- Brush first. Detangle gently from the ends up with a soft extension or loop brush, holding the hair at the root so you don't pull on the bonds.
- Wash upright. Wash in the shower with your head upright, never tipped forward over a basin, so the hair falls in the direction it grows and doesn't tangle.
- Use lukewarm water. Hot water can soften adhesives.
- Shampoo the scalp gently. Use a small amount of shampoo and massage with your fingertips between the rows, without rubbing or scrubbing the bonds. Let the lather run down through the lengths, then rinse thoroughly.
- Blot. Gently squeeze and blot the lengths with a towel to remove excess water, so your conditioner isn't diluted. Don't rub.
- Apply a conditioning treatment and brush through gently. Smooth a conditioner or treatment cream, such as Rebuild Replenishing Hair Conditioner, through the mid-lengths and ends, keeping it off the bonds. Then brush through gently with a soft brush made for tangles. The product helps the brush glide through, so you don't tug.
- Rinse. Rinse thoroughly with cool water.
- Blot again. Squeeze and blot with a towel, never rubbing.
- Mist with a leave-in conditioner. Spray Leave-In Hair Detangler, the leave-in conditioner from our Daily Use range, through the mid-lengths and ends. It adds moisture, which extensions need because your scalp's natural oils can't travel down to them, and makes brushing easier, reducing tugging and breakage.
- Brush gently. Work from the ends up with your soft brush, holding the hair at the root so you don't pull on the bonds.
- Protect, then dry. Apply a heat protectant such as Replenishing Thermal Care Serum to the lengths, then dry the roots and bonds completely. Damp bonds can slip and cause matting. Keep heat tools on a lower setting.
"Damp bonds can slip and cause matting. Apply heat protection and a leave-in conditioner to add moisture, as extensions don't get natural oils travelling down to the ends."
Julie Hawkins, Insight Educator and owner of The Bespoke Hair Company
How to wash clip-in extensions
Take them out first. Brush each piece, then wash it in a basin of lukewarm water with a little shampoo, stroking from the clip down. Rinse, blot each piece with a towel, apply conditioner to the lengths and brush through gently with a soft brush, then rinse again. Blot, mist with a detangling spray, brush gently and lay the pieces flat on a towel to air-dry.
How often should you wash hair extensions?
Less often than you might wash your own hair: every wash is a little wear on the hair and bonds. Many extension specialists suggest two or three times a week, but follow your stylist's advice for your type of extensions. Between washes, a little Bodifying Dry Shampoo on your own roots absorbs oil. It's a non-aerosol powder, so you can apply it precisely. Keep it off the bonds and brush through gently.
Detangling and heat protection for extensions
Tangles are the biggest enemy of extensions, and wet hair is at its most fragile. Never brush wet extensions without product in them. Work out tangles while your conditioner or treatment cream is in, using a soft brush made for tangles. After rinsing and blotting, mist Leave-In Hair Detangler, our Daily Use leave-in conditioner, through the lengths. It adds the moisture extensions miss out on, because natural oils from the scalp can't reach them, and reduces tugging and breakage. Then brush gently from the ends up before drying. The detangler is silicone-free. Keep conditioner and detangler away from the bonds, as they contain nourishing oils.
Before heat styling, smooth a little Replenishing Thermal Care Serum from the Rebuild range through the lengths. It's silicone-free and protects up to 230°C, but extension hair is best styled at lower temperatures. Our heat protection guide explains more.
How to wash a human hair wig
Human hair wigs are cared for much like extensions, but you can wash them off the head:
- Gently brush out tangles, starting at the ends.
- Fill a basin with lukewarm water and add a small amount of sulphate-free shampoo.
- Dip the wig and swish it gently. Don't rub, twist or scrub.
- Rinse in cool, clean water.
- Blot gently with a towel to remove excess water.
- Apply conditioner or a treatment cream from the mid-lengths to the ends, keeping it away from the cap and knots, and gently brush through with a soft wig brush. The product helps the brush glide.
- Rinse in cool water.
- Blot with a towel (don't rub or wring).
- Mist a leave-in conditioner, such as Leave-In Hair Detangler, through the lengths to add moisture, and brush gently from the ends up.
- Leave to air-dry on a wig stand.
A common guide is to wash a human hair wig every 7 to 10 wears, or sooner if you use a lot of product. Synthetic wigs are different: they need products made specifically for synthetic fibre, and most can't take heat, so follow the manufacturer's care instructions rather than using salon haircare.
From the salon: Hair to Ware
Hair to Ware is a family-run salon in Ware, Hertfordshire, that has specialised in wigs, toppers and hair extensions since 2001, helping people with all kinds of hair loss find hair that looks and feels like their own. They're one of 25 NHS-approved salons in the UK, won Stylist of the Year 2022 for Hertfordshire at the England's Business Awards, and have been featured on Channel 4. The team cut, colour and style human hair wigs and extensions in the salon, and use Insight on their clients' hair.
Frequently asked questions
Can I use normal shampoo on hair extensions?
It's best not to. Many everyday shampoos contain sulphates or silicones that can dry out extension hair or build up around bonds. A gentle, sulphate-free, silicone-free shampoo is the safer choice.
Is sulphate-free shampoo better for extensions?
Yes. Sulphate-free cleansers are gentler on extension hair, which can't replenish its own oils, and are less likely to weaken bonds and tapes.
Why are my tape-in extensions slipping?
Common causes are conditioner, oils or heavy products at the root, washing in very hot water, and not drying the tapes fully: damp bonds and tapes can slip and cause matting. Keep conditioner on the lengths and use a low-residue shampoo at the roots.
What is the best shampoo for tape-in extensions?
A gentle, sulphate-free and silicone-free shampoo. Our education team recommends Rebuild Replenishing Shampoo. If your roots get oily or your tapes are very sensitive, Gentle Moisture Shampoo has no oils in the formula.
Can I use Insight on synthetic hair?
Our haircare is formulated for human hair, so it's suitable for human hair extensions and wigs. For synthetic extensions and wigs, use products made for synthetic fibre.
Should I follow my stylist's aftercare instead?
Always. Different extension methods have different needs, and your specialist knows exactly what you're wearing.
Shop all sulphate-free shampoo and conditioner, vegan and made in Italy.
About the author
Charlotte Read has spent six years in the hair industry with Insight Professional and holds a First Class BSc in Business Management and Marketing. She writes with reference to real salons across social media and the wider Insight community, and draws on the Insight office team, who between them bring over 100 years of combined experience on salon floors.
Where technical expertise is needed, Charlotte consults Lorraine Matic, Head of Insight UK Education, who brings over 38 years of global experience in colour, technique and hair science.