How to Fix Frizzy Hair: Serums, Tips and Products

You walk out the door looking sleek. Twenty minutes later the humidity hits and suddenly you look like you've been in a wind tunnel. Auckland does this to people. If frizz is the bane of your hair life, take heart: it's genuinely fixable. You just need to understand what frizz is, why it happens, and what actually works to tame it.

Here's the full guide we give clients at Little Garage.

What causes frizzy hair?

Frizz is moisture. Specifically, it's your hair cuticle lifting up to let moisture in (or out) of the strand.

Picture each strand as a tiny pinecone. When the cuticle scales lie flat, hair looks smooth and shiny. When they lift (from dryness, damage, or humidity), the strand puffs up, catches the light unevenly, and looks fuzzy.

The three biggest culprits:

• Dry, porous hair that's desperate for moisture
• Humid weather forcing extra moisture into the strand
• Damage from heat, colour, or rough handling

Most frizz is a combination of all three.

Is frizz the same as damage?

Not always. Healthy hair can absolutely be frizzy, especially if it's naturally dry, curly, or porous. But frizz on hair that also feels rough, snaps easily, or has split ends is usually a sign of damage. That version needs a proper repair plan, not just a serum.

Step 1: Start with a frizz-fighting shampoo

The wash is where frizz control begins. Look for a shampoo that:

• Is sulphate-free (sulphates strip natural oils and dry hair out)
• Contains moisturising ingredients like argan oil, shea butter, or glycerin
• Has a low pH (around 5) so the cuticle closes smoothly

Avoid clarifying shampoos for daily use. Use them once a month to clear product build-up, then go back to your regular hydrating shampoo.

Pro tip for Aucklanders: our water is reasonably soft, but if you swim regularly, rinse your hair with clean water before you get in the pool. Pre-soaked hair absorbs less chlorine.

Step 2: Condition like you mean it

Every wash needs conditioner. Every wash.

• Apply from mid-lengths to ends
• Leave it in for 3 to 5 minutes
• Detangle gently with a wide-tooth comb while conditioner is in
• Rinse with cool water to seal the cuticle

Once a week, swap conditioner for a deeper mask. Look for masks with keratin, ceramides, or hydrolysed proteins if your hair is damaged. Go for shea butter, coconut, or avocado if it's just dry.

Step 3: Add an anti-frizz serum

This is the step most people skip, and it's the one that changes everything. A good anti-frizz serum coats the strand, seals the cuticle, and blocks moisture from getting in (or out).

Apply to damp hair before drying:

• One pump for fine hair
• Two to three pumps for medium hair
• Three to four pumps for thick or curly hair

Rub between your palms, then smooth through the lengths and ends. Don't apply to the scalp.

If your hair tends to get weighed down, try a lightweight oil-free serum. If your hair is thick, dry, or coarse, a richer silicone-based or oil-based serum is your friend.

Step 4: Dry your hair the right way

Most frizz happens during the drying stage. Small changes here make a huge difference.

The gentle dry method

1. Don't rub. Squeeze excess water out with your hands.
2. Swap the towel. Use a microfibre towel or cotton T-shirt instead of terry cloth.
3. Let hair air-dry to 60% dry before touching it.
4. Use a nozzle on your hairdryer. Direct the airflow down the strand from root to tip.
5. Finish with cool air. The blast of cool at the end closes the cuticle and locks in shine.

For curly hair

Use a diffuser on low heat and low speed, cupping hair upward into the bowl. Don't touch curls while they dry.

Step 5: Lock it in with a finishing product

Once hair is dry, add one last layer of protection:

• A tiny amount of oil (argan, jojoba, or a bonding oil) smoothed through the lengths
• Or an anti-humidity spray on really sticky days
• Or a silk/satin scarf if you're walking somewhere humid

Just don't overdo it. Too much product piles up and looks greasy.

What to stop doing

If you're constantly battling frizz, some habits might be making it worse:

• Brushing dry hair. Brush before you wash, or detangle wet with conditioner in.
• Using the wrong brush. Boar bristle or wooden combs are kinder than plastic paddle brushes.
• Rough cotton pillowcases. Swap for silk or satin. Your hair (and skin) will thank you.
• Over-washing. More washing equals more dryness equals more frizz.
• Over-heating. Daily straightening or curling without heat protectant wrecks hair fast.

The role of your haircut

Frizz gets worse when hair is dehydrated at the ends or split from growing out a cut too long. Regular trims (every 8 to 12 weeks) are one of the cheapest frizz fixes going.

If you've got layers, make sure they're cut by someone who understands your texture. Badly placed layers on curly or wavy hair create bulk that reads as frizz even when your cuticle is fine.

When to book a salon treatment

Sometimes at-home products can only go so far. Come and see us for:

• A bond treatment to rebuild damaged strands
• A gloss or deep conditioning service to lock in moisture
• A keratin or smoothing treatment if your hair is fighting you every single day
• A cut that suits your texture so you're working with your hair, not against it

A 30-minute in-salon treatment can give you weeks of frizz-free days.

What about keratin and smoothing treatments?

We get asked about these a lot. Modern keratin treatments can be great for frizz-prone hair, but they're not one-size-fits-all. They smooth the cuticle, cut your drying time, and reduce daily frizz significantly. The trade-off is they need to be redone every 3 to 6 months, and your hair needs to be in decent condition to start with.

Come in for a consultation. We'll look at your hair and recommend honestly whether a smoothing service is right for you or whether a different approach will give you better long-term results.

Auckland weather, tamed

Frizz isn't a life sentence. With the right shampoo, a proper conditioner, a good anti-frizz serum, and a gentler drying routine, most people see a huge difference within two weeks. Combine that with a seasonal salon treatment and a great cut, and you'll be ready for whatever the weather throws at you.

Book an appointment with one of our Auckland stylists. We'll help you build a routine that actually sticks.