Guide · 3 min read

Straightened Hair Regrowth: Daily Care

Zoltan Vargyai · perming since 1991
Updated 22 October 2026

The short answer

New roots can grow with a different texture from permanently straightened lengths. Seeing that contrast does not mean the treatment has washed out, and it does not automatically mean another service is due.

Want this done properly?

Keratin treatment in London (Straightment Demi)

Matched to your hair, no line, roots after 4–8 months. £199.95–£449.95, by length.

Keratin treatment in London →

Your new roots can look quite different from permanently straightened lengths. That does not mean the treatment has washed out. It does not automatically mean you need another appointment, either.

Plant and mirror object illustration

After your service

Keep any fresh-treatment waiting period first. Once you can style normally, choose the finish you want. You can wear it straighter or work with the movement. Every morning does not need to be a battle with your roots.

My approach: make the join easier to handle, rather than keep clamping it.

A practical root routine

  1. Detangle without pulling through the change in texture. Use conditioner for slip and work in small sections. Do not drag a brush from the roots through a knot.
  2. For a straighter finish, direct the roots while drying. Keep the airflow moving and use gentle control. Give it enough direction to sit nicely. It does not need to be a daily competition for the flattest root.
  3. Keep the old lengths out of repeated correction. They have already been treated. Roots that need arranging do not mean the ends need ironing again.
  4. Use appropriate heat protection within my two products. One conditioning heat protector may do both jobs. A separate leave-in and protector already make two. Do not automatically add oil.
  5. Stop if the same point keeps snapping. Send clear pictures and tell me what the hair has had. More passes or a stronger product are not the next step.

The line is information

The join shows us where new hair meets treated hair. It is not a ruler for a touch-up date that suits everyone. I need to see the roots, the lengths and know what treatment was used.

You cannot permanently straighten untreated new growth with a home routine. Products can help it sit differently for a while. They cannot stop your natural hair growing in.

Sleep and work arrangements

Keep the lengths clear of your shoulder. Ties and coverings should feel comfortable, not pull at the roots. A braid can leave a wave, which may not be what you want for a straight finish. Keep your helmet fitted properly; safety comes first.

When to ask about roots

Ask when it gets difficult to handle, the contrast bothers you or you keep reaching for more heat. I might suggest waiting, wearing it differently or making a cutting plan. Another treatment is not the only answer.

The Japanese grow-out article explains the treatment cycle. This page is for managing it day to day. If you want to stop straightening, go to the transition guide.

Questions

Does regrowth mean my straightening failed?

Not on its own. Natural new growth is different from a change in the treated lengths.

Should I iron the roots every day?

I would not make that your daily job. Start with directional drying and keep repeated heat off the join.

How much new growth is enough for treatment?

I need to know the system and see the hair. A certain length of root or a date does not tell me enough.

Can an oil keep roots straight permanently?

No. A temporary finish or coating does not permanently change new growth.

What if it breaks at the join?

Use less heat and handling and have it checked. Do not keep correcting the same spot.

What I look for

Before I choose anything, I look at:

  • Your natural pattern.
  • Your condition.
  • Your previous chemical history.
  • Your colour history.
  • What you want the hair to do.
  • How far the hair needs to move.

I use the Zoltan tecSture Scale™ as part of that assessment.

→ How I assess your hair

When I say no

If the hair cannot safely do what you are asking, I say so.

Sometimes it is: No.

Sometimes it is: Not yet.

Sometimes it is: We need to do less.

Sometimes the hair needs repair first.

I would rather lose an appointment than lose your hair.

The treatment

Keratin treatment in London (Straightment Demi)

Matched to your hair, no line, roots after 4–8 months. £199.95–£449.95, by length.

See the prices

You tell me the result. I choose the chemistry.

Book

Not sure what you need?

Start with the £9.95 online consultation.

Send the questionnaire and six photos. I call you back within 72 hours, usually the same day.

Prefer to come in?

The in-person consultation is £74.95.

Neither consultation fee comes off the treatment.

Or, if you already know what you want:

Find my treatment & price

Don't cook your hair.

“Hair-straightening specialist Zoltán Vargyai”

HELLO! UK, April 2018 Read →

Keep reading

All Hair Guides →

Are you a pro? The full technique is on tecSture. For hairdressers →

Want this done properly?

Prices and booking →
Book · starts at £199.95Search