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BiolageSmooth Proof Serum

Hair serum

#95 in Hair Styling Serums on Amazon

$29

or save up to 5% more with Subscribe & Save on Amazon

Size 101 ml, $8.49 / fl oz

Sold by Amazon.com. Amazon's shipping and returns apply. Who sells Biolage on Amazon

Amazon price as of Oct 5, 2026, 2:00 AM ET, subject to change: the price on Amazon at checkout is the one that applies. We may earn a commission; the price you pay is the same.

Color Wow Curl Wow Flo-etry
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About the Product

What it is: Hair serum, 101 ml. Smoothing serum. This serum adds a protective layer onto the hair to provide the perfect amount of smoothness and shine to frizz-prone hair.

What Else You Need to Know:

  • Benefits: This serum helps control frizz up to 24 hours and leaves hair looking and feeling soft, sleek, and shiny.
  • Additional benefits: This vegan formula is free of animal-derived ingredients or byproducts, parabens, mineral oil, silicone, and colorants.
  • Suggested use: Warm one pump of serum in hands, run through damp hair and style as usual.

From the Amazon listing.

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Cheaper on the Same Shelf

Hair serum, for less per ounce on Amazon

$29

$8.49 / fl oz