The Complete Guide to Caring for Highlighted Hair
> Highlights can transform your look — but they also put real stress on your hair. Here's everything you need to know to keep highlighted hair strong, soft, and healthy at home.
Why Highlighted Hair Needs Special Care
Highlights are one of the most popular salon services in New Zealand — and for good reason. They add dimension, brightness, and movement to your hair.
But the process of lightening hair is one of the most chemically intensive treatments available. Here's what actually happens inside your hair during the process:
The cuticle is opened using an alkaline agent, so the lightener can enter
The melanin (colour pigment) is broken down by the bleach
Disulfide (SS) bonds are weakened — these are the bonds that give hair its strength and elasticity
The hair's natural moisture is reduced, leaving it more porous and fragile
The result? Hair that looks beautiful in the salon but can quickly become dry, frizzy, and prone to breakage at home — especially if the right care isn't in place.
The #1 Problem: Surface Care vs. Internal Repair
Most people reach for a moisturising conditioner after highlights. That helps with the feel — but it doesn't address the real issue.
When disulfide bonds are broken, the internal structure of the hair is weakened. No amount of surface coating will rebuild that. Hair may feel soft temporarily, but it remains fragile underneath.
What highlighted hair actually needs is internal repair — restoring the keratin structure from within, so hair regains strength, elasticity, and lasting softness.
The 3 Pillars of Highlighted Hair Care
1. Internal Repair (Most Important)
The most important step after highlights is rebuilding the internal keratin structure.
Keratin makes up over 80% of your hair. When highlights weaken the SS bonds, keratin becomes fragmented and disorganised. The solution is to supply activated keratin that can penetrate the hair fibre and reinforce those weakened bonds from inside.
What to look for: A treatment that works at the molecular level — not just coating the surface, but bonding with the internal structure. At KAMI Lab, we use Meteo Connector for exactly this purpose.
How to use it at home:
- Shampoo and squeeze out excess water
- Apply 2–3 pumps of Meteo Connector to mid-lengths and ends, and work it through
- Layer your regular treatment on top — without rinsing the Meteo Connector first
- Leave for a few minutes, then rinse thoroughly
- Blow-dry, then finish with a flat iron (160°C for high-damage hair)
> The heat step is important — activated keratin bonds more effectively to the hair fibre with gentle heat.
How often: 1–2 times per week as a special care step, not every wash.
2. pH Balance
After highlights, your hair's pH is pushed toward alkaline — far from its natural range of 4.5–5.5. This leaves the cuticle open and the hair vulnerable to further damage.
What to do:
- Use a slightly acidic shampoo and conditioner (look for pH 4.5–5.5)
- Avoid shampoos with strong sulphates, which can further strip moisture
- Rinse with cool water to help close the cuticle after washing
This simple step helps seal the cuticle, reduce frizz, and lock in moisture after every wash.
3. Moisture and Protection
Highlighted hair loses moisture faster than untreated hair because the cuticle is more porous. Keeping moisture in is an ongoing task.
Daily habits that help:
- Apply a light leave-in oil or serum before blow-drying (protects against heat)
- Use a heat protectant whenever you use styling tools
- Deep condition once a week with a nourishing mask
- Sleep on a silk or satin pillowcase to reduce friction overnight
- Avoid washing with very hot water
Signs Your Highlighted Hair Needs More Care
Watch for these warning signs that your hair needs extra attention:
- Elasticity loss — hair snaps instead of stretching when pulled gently
- Extreme dryness — hair feels rough and straw-like even after conditioning
- Excessive frizz — especially in humidity
- Colour fading fast — porous hair loses colour quickly
- Tangling and breakage — especially at the mid-lengths and ends
If you're experiencing several of these, it's time to focus on internal repair before adding more colour.
A Simple Weekly Routine for Highlighted Hair
| Step | Product Type | Frequency |
| Shampoo | Gentle, low-sulphate, slightly acidic | Every wash |
| Internal repair treatment | Keratin-based (e.g. Meteo Connector) | 1–2x per week |
| Conditioner / mask | Moisturising treatment | Every wash |
| Leave-in / heat protectant | Light oil or serum | Before heat styling |
| Deep condition | Nourishing hair mask | Once a week |
How Often Should You Get Highlights?
From a hair health perspective, a few guidelines:
- Full highlights: Allow 8–12 weeks between services to give hair time to recover
- Partial highlights / toning: Can be done more frequently (every 6–8 weeks) as the process is less intensive
- Always do a strand test if you're changing technique or significantly lightening
Between appointments, the home care routine above is your best investment in keeping highlights looking fresh and hair staying healthy.
Summary
Caring for highlighted hair isn't complicated — but it does require the right approach:
Rebuild from the inside with an internal keratin repair treatment
Restore pH balance with slightly acidic products
Lock in moisture with daily protective habits
The difference between highlighted hair that looks dull and damaged versus hair that stays soft, shiny, and strong often comes down to this one missing step: internal repair.
If you'd like to try an internal repair treatment designed specifically for highlighted and bleached hair, Meteo Connector is available in our online store.
Written by the KAMI Lab team
KAMI Lab — Japanese professional hair care, available in New Zealand