What are curl types 4A, 4B, and 4C?

4A hair has a defined, S-shaped coil pattern that holds its shape with moisture. 4B hair has a tighter, Z-shaped pattern with sharp angles and lots of volume. 4C hair has the tightest coil pattern, a sign of healthy, elastic coils, and it thrives with consistent moisture. All three types benefit from products formulated specifically for coily hair.

What are the best products for coily hair?

Coily hair responds best to products that prioritize moisture, gentle cleansing, and definition. The Ouidad Coil Infusion collection is developed specifically for Type 4 coils, covering every step from cleansing to styling.

How often should I wash coily hair?

Most coily hair types do well with a full wash once a week or every one to two weeks, depending on your scalp's oil production and lifestyle. Co-washing in between helps maintain moisture without disrupting your curl pattern.

What's the best way to moisturize coily hair?

The most effective approach for coily hair is a layered moisture routine: start with a hydrating conditioner or leave-in after washing, add a cream or gel to lock in that moisture, and seal with a lightweight oil. Rehydrating with a water-based spray between wash days helps coils stay soft and defined.

Can I use the Coil Infusion products on 3C hair?

The Coil Infusion collection is formulated with Type 4 coils in mind, but 3C hair (which sits at the tightest end of the Type 3 curl spectrum) can also benefit from the added moisture and definition these products provide. If your 3C curls run dry or need extra hold, the collection is worth exploring.

Coily Hair Products | 4a/4b/4c Curl Care

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5 Products

Coil Infusion® Triple Treat

Deep Conditioner

3800

Hydration Condition Repair

Best For: Coils, 4B-4C

• Best-selling deep conditioner that adds rich hydration and retains moisture
• Luxurious, high-slip formula enriches coils with reparative nutrients and hydrating botanicals
• Helps to strengthen, repair, and restore dry or damaged curls and coils
• Free from: Parabens, Sulfates, Mineral Oil, Phthalates, Petroleum, Gluten
• Vegan and...

Ouidad Coil Infusion® Good Shape Defining Gel tube with a purple label

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Coil Infusion® Good Shape®

Defining Gel

3000

Hydration Definition Elongation

Best For: Coils, 4B-4C

Coil Infusion® Drink Up

Cleansing Conditioner

3000

Hydration Condition Repair

Best For: Coils, 4B-4C

• Multitasking formula can be used as conditioner or a co-wash
• Infused with nourishing antioxidants to seal in rich, long-lasting hydration
• High-slip formula that helps to strengthen hair and prevent breakage
• Free from: Silicones, Parabens, Sulfates, Mineral Oil, Phthalates, Petroleum, Gluten
• Vegan and Cruelty-free
...

Coil Infusion® Give A Boost®

Styling + Shaping Gel Cream

3000

Hydration Definition Elongation

Best For: Coils, 4B-4C

• Weightless gel-cream infused with peptides and black castor oil that hydrates hair and defines coils
• Combines the moisturizing and elongating benefits of a cream with the curl-defining benefits of a gel
• Helps to strengthen curls and lock in rich hydration
• Creates natural volume and touchable, lightweight...

Ouidad Coil Infusion® Soft Stretch Priming Milk spray bottle with a purple label

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Coil Infusion® Soft Stretch

Priming Milk

2800

Hydration Prime Elongation

Best For: Coils, 4B-4C

• Multi-action hydrating primer and leave-in treatment that helps to strengthen and prevent breakage
• Elongates curls and extends the life of your style
• Adds rich hydration and slip to coils
• Free from: Silicones, Parabens, Sulfates, Mineral Oil, Phthalates, Petroleum, Gluten
• Vegan and Cruelty-free

FAQ

The Moisture Lock™ collection is designed for curly and wavy hair that needs deep hydration, particularly high-porosity hair that struggles to retain moisture. The Coil Infusion collection is built specifically for Type 4 coils and addresses the unique structural needs of tighter textures, including shrinkage, fragility at curl junctions, and intensive moisture retention.

Coily Hair Products for 4A, 4B & 4C Curls

Coily hair–Type 4–has a very tight curl pattern and specific care requirements. Ouidad's Coil Infusion collection is formulated from the ground up for 4A, 4B, and 4C coils: gentle cleansing, deep moisture, and styling support that lets your coils define, grow, and thrive.

What Makes Coily Hair Different?

Coily hair’s tight curl pattern gives it incredible volume and versatility, and that structure also shapes how it holds moisture. The tighter the coil, the harder it can be for natural oils to travel down the hair shaft, so hydration needs regular replenishing. Coily hair also tends to be delicate at the curl junctions, making breakage a real concern without the right routine. Hydration and sealing are not optional steps for coily hair. They're the foundation everything else should build on.

How to Care for Coily Hair

A strong coily hair routine starts with gentle cleansing that removes buildup without stripping moisture. Conditioner-only washing between full wash days helps maintain hydration while keeping your scalp clean. Deep conditioning once a week is key for keeping coils elastic and reducing breakage over time. And when it comes to detangling, always work with wet, conditioned hair: finger detangling or a wide-tooth comb minimizes stress on the curl pattern.

How to Style Coily Hair

Apply your styler to soaking-wet hair, working section by section for even distribution and definition. Sealing with an oil after styling locks moisture in and adds shine without weighing coils down. Protective styles, like twists, braids, and updos, extend the life of your style and reduce daily manipulation, which help retain length over time.

Why the Coil Infusion Collection?

Every product in the Coil Infusion collection is formulated specifically for Type 4 coils. The Coil Infusion® Drink Up Cleansing Conditioner cleanses without stripping moisture. The Coil Infusion® Good Shape® Defining Gel provides long-lasting definition without crunch. From wash day to styling, every step in the collection is built for the unique needs of coily hair, not adapted from formulas designed for looser textures.

Coil Infusion™

FAQ

Coily Hair Products for 4A, 4B & 4C Curls

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