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Biolage

Biolage Smooth Proof Shampoo 33.8 oz

  • Protects in up to 97% humidity
  • Up to 72 hours of smoothness with the Smooth Proof system
  • Camellia oil and glycerin
  • Paraben and silicone free, vegan
  • 33.8 fl oz (1000 ml)

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A silicone-free smoothing shampoo that tames frizz and static in humid weather. The longest-lasting results rely on pairing it with the matching conditioner.

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ASIN: B00IRDAZ7KCategory: Hair Shampoos

Overview

Biolage made this smoothing shampoo for frizzy, hard-to-style hair, with camellia oil and glycerin that polish strands and align the cuticle. It cleans while locking out the excess moisture that puffs hair up.

Frizz and static control from the wash step onward is the case for it, in a large bottle. The longest smoothing claim relies on the full Smooth Proof system, including the conditioner.

Who it's for

Frizz-prone hair in humid climates, including color-treated hair, fits this shampoo. Those wanting more lift will find a smoothing wash works against them.

Pros and cons

Pros
  • Humidity protection claim
  • Silicone and paraben free
  • Camellia oil for shine
  • Vegan, not tested on animals
Cons
  • Full claim needs the matching conditioner

Performance notes

Glycerin and camellia oil smooth the cuticle so it lies flat and repels excess moisture from the air, which stops strands swelling into frizz. Massaging the lather in and following with the conditioner completes the smoothing.

Specifications

BrandBiolage
Dimensions & fit
Item weight953 g
Item Dimensions3.15 x 3.15 x 10.16 inches
Capacity & performance
Liquid Volume1000 ml
Age Range DescriptionAdult
Construction & materials
Material Type FreeParabens, silicone
Suitable Hair ColorAll hair colors
Included components
Unit Count33.8 fl oz
Other details
Hair TypeCurly, wavy, frizzy, damaged, color treated
Scent NameBiolage AromaScience fragrance
Other Special Features Of The ProductVegan, not tested on animals
Special IngredientsCamellia oil, glycerin
Active IngredientsSalicylic Acid, ceramide,water,polyquaternium-10,amino
Item FormLiquid
Recommended Uses For ProductColor Protection

Frequently asked questions

How do I use Biolage Smooth Proof Shampoo?

Apply to wet hair, work into a lather with a massaging motion, rinse and repeat if desired. Biolage suggests following with Smooth Proof Conditioner left on for 1 to 3 minutes.

Does Biolage Smooth Proof Shampoo contain silicone?

No. It is paraben and silicone free.

Is Biolage Smooth Proof Shampoo safe for color-treated hair?

It is listed for all hair colors and names color treated hair among its hair types.