Smoothing Shampoo

Fight frizz in the shower with the best hair-smoothing shampoo. Visible results after just one wash.

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Good Behavior Smoothing Spray

Spirulina Protein Smoothing Spray

$38.00

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2 Sprays [$30.60/unit]
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Good Behavior Smoothing Spray

Spirulina Protein Smoothing Spray

$38.00

SMOOTHING SPRAY [$34.00]
SMOOTHING SPRAY + 4 IN 1 [$61.20]
SPRAY + WASH DUO [$78.40]
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Good Behavior Smoothing Spray

Spirulina Protein Smoothing Spray

$38.00

1 Spray
Smoothing Spray + 4-in-1 Prep Spray [Save 15%]
Spray + Shampoo & Conditioner [Save 20%]
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Smoothing Shower Essentials

Smooth Hair Essentials

$102.00 Saving 15% $86.70

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Blonde Pop Shampoo Liter

Purple Toning Shampoo

$96.00

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Complete Smoothing Routine

Smooth Hair Essentials

$162.00 Saving 20% $129.60

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Professional Smoothing Kit

Professional Smoothing Kit

$80.00 Saving 15% $68.00

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Good Behavior Smoothing Spray - Add 2 More, Get 2 Free - Bonus Offer

Spirulina Protein Smoothing Spray

$152.00 Saving 50% $76.00

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Good Behavior Smoothing Spray - Add 3 More, Get 3 Free - Bonus Offer

Spirulina Protein Smoothing Spray

$228.00 Saving 50% $114.00

Good Behavior Smoothing Spray

$114.00 Saving 33% $76.00

Good Behavior Smoothing Spray

$114.00 Saving 33% $76.00

Good Behavior Smoothing Spray

$190.00 Saving 40% $114.00

How IGK’s smoothing shampoo works

Frizz doesn’t just happen. It starts at the cuticle, where moisture and humidity sneak in to create unruly hair. Our Good Behavior Ultra-Smooth Shampoo is designed to stop frizz before it even begins thanks to our advanced water-activated technology. It creates a frizz-blocking barrier, a.k.a. an invisible shield around each strand that keeps your hair sleek and under control, no matter the weather.

But it’s not just about taming frizz. Our formula is packed with nourishing ingredients that help restore the outer layer of your hair, smoothing the cuticle and adding definition. The result? Hair that’s smooth, soft, and easy to style, all while looking healthier than ever.

Get all-day frizz protection with our hair smoothing shampoo

Our smoothing shampoo works for all hair types. Whether you’re fighting full-on frizz or just want a little extra polish, our formula is the perfect fit. Unlike traditional shampoos that can leave your hair feeling dry, our formula gently cleanses while locking in moisture. 

Hair smoothing shampoo is just the first step in our Good Behavior collection. Together, the 5-step routine gives you smooth, frizz-free hair for up to 4 days. Plus, it’s free from sulfates, parabens, and other harsh ingredients, so you can feel confident about what you’re putting on your hair.

Shop the best shampoo for your hair

While a smoothing shampoo is your go-to for sleek hair, you may also need other benefits like deep hydration, damage repair, color protection, or extra volume. Here’s a breakdown of shampoos that can work together with your smoothing routine to give your hair exactly what it needs.

Need more help deciding? Take our quick shampoo quiz to get paired with the best formula for your hair type and goals.

Hydrating Shampoo

Dry hair and frizz often go hand-in-hand, which makes our Hydrating Shampoo a perfect match for your smoothing routine. This type of shampoo replenishes lost moisture, leaving your hair softer, shinier, and easier to style.

Volumizing Shampoo

Fine hair doesn’t automatically mean flat hair. And unfortunately, teasing it to add volume can cause tons of unwanted frizz and flyaways. Using a volumizing shampoo can add natural lift and body at the roots, giving your hair more texture and movement. 

Repairing Shampoo

If your frizz is caused by damage—think heat styling, coloring, or daily brushing—a repairing shampoo can help. Our Instant Repair Shampoo strengthens your strands, seals and smooths the cuticles, and helps prevent breakage that makes hair appear uneven and frizzy.

Dry Shampoo

Need to maintain your style between washes? Dry shampoo is your new must have. It absorbs oil, boosts volume, and keeps your hair looking clean without water!

Colored Hair Shampoo

Color-treated hair needs special care to stay vibrant. Colored hair shampoo gives you the perfect balance of cleansing and protection!

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