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StraightBest for porosity: medium, high

Type 1C

Straight, coarse, and full of body.

Type 1C is straight with coarse, thick individual strands. It has the most body of the straight types and can appear slightly wavy when humid.

Coarse strand diameterResistant to curlingFrizz-prone in humidityHolds shape well

Quick answer

Type 1C is straight hair: straight, coarse, and full of body. It pairs best with medium and high porosity. Use ingredients like Argan oil, Silicones (for slip), Keratin, and avoid Sulfates daily and Heavy beeswax. The top product pick is Bumble and bumble Hairdresser's Invisible Oil Shampoo (shampoo).

The ideal routine

daily

  • 1Smooth with an anti-frizz oil
  • 2Use a wide-tooth comb
  • 3Re-style with a flat brush + serum

weekly

  • 1Shampoo 1–2x
  • 2Deep condition
  • 3Apply anti-humidity sealer

monthly

  • 1Clarify monthly
  • 2Bond/protein mask
  • 3Trim every 8–10 weeks

Top 10 products for Type 1C

Hand-picked across shampoos, conditioners, leave-ins, oils, and stylers.

1

Bumble and bumble Hairdresser's Invisible Oil Shampoo

Shampoo

Tames coarse hair softly.

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2

Olaplex No.4 & No.5

Wash duo

Strength + softness.

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3

Moroccanoil Hydrating Mask

Mask

Quenches thick strands.

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4

Color Wow Dream Coat

Anti-frizz

Glass-like smoothness in humidity.

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5

Living Proof No Frizz Nourishing Oil

Oil

Frizz control with shine.

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6

Kerastase Discipline Maskeratine

Mask

Sleeks coarse hair.

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7

Briogeo Farewell Frizz Smoothing Shampoo

Shampoo

Daily smoothing.

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8

Sachajuan Intensive Repair Treatment

Mask

Strengthens thick hair.

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9

Oribe Gold Lust Nourishing Hair Oil

Oil

Luxurious shine and softness.

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10

IGK Antisocial Overnight Mask

Overnight

Restores moisture by morning.

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Do

  • Seal with oil after styling
  • Sleep with a silk wrap
  • Use heat protectant

Don't

  • Skip conditioner
  • Rough-towel dry
  • Use cheap drying alcohols

Love these ingredients

Argan oilSilicones (for slip)KeratinShea oil (light)

Skip these

Sulfates dailyHeavy beeswaxLanolin

Frequently asked questions

What is Type 1C hair?

Type 1C is straight with coarse, thick individual strands. It has the most body of the straight types and can appear slightly wavy when humid.

What porosity pairs best with Type 1C hair?

Type 1C hair typically pairs best with medium and high porosity. Match your routine to that absorption profile for best results.

Which ingredients should Type 1C hair use and avoid?

Reach for Argan oil, Silicones (for slip), Keratin, Shea oil (light). Skip Sulfates daily, Heavy beeswax, Lanolin — they tend to weigh down or dry out this texture.

What is the best wash-day routine for Type 1C?

Shampoo 1–2x Deep condition Apply anti-humidity sealer

What are the top recommended products for Type 1C hair?

Bumble and bumble Hairdresser's Invisible Oil Shampoo (Shampoo), Olaplex No.4 & No.5 (Wash duo), Moroccanoil Hydrating Mask (Mask), among others listed above.

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