Biolage Smooth Proof Serum – Hydrates & Heals Brittle Strands, Frizz Control Hair Serum, For Frizzy Hair, With micro-dosed Camellia Oil & Glycerin
$29.00
Price: $29.00
(as of Mar 10, 2026 16:48:49 UTC – Details)
From the manufacturer
Anti-Frizz Concentrate 
CAMELLIA OIL
Camellia oil is a nourishing emollient that acts as a protective layer against environmental aggressors, like humidity, to eliminate frizz.
GLYCERIN
Glycerin is a natural humectant that draws moisture to the hair to reduce dehydration and frizz.
80% LESS FRIZZ FOR UP TO 24 HOURS.*
Instantly control frizz-prone hair with the combination of hydration and defense against environmental aggressors prone to causing frizz, like humidity. Hair is easier to detangle, smoother, softer and more manageable.
*Smooth Proof Serum vs. non-conditioning shampoo
Shampoo
Nourishes and controls frizzy hair, instantly softening and detangling for sleek, shiny hair.
Conditioner
Perfectly smooths hair, controls frizz & static, defends against humidity.
Leave-In Cream
Controls frizz, detangles, and adds shine for smooth, manageable hair.
Serum
Hydrates, heals, and enhances shine of brittle, frizzy hair while protecting against heat styling and humidity.
Why does the bottle look different from before?
We updated the packaging in 2025 to a sleeker, more sustainable bottle – 100% recycled bottle and cap! However, the formula and performance remain the same.
Which hair type is Smooth Proof best for?
Smooth Proof is best for medium to thick hair prone to frizz.
What are the key ingredients in Smooth Proof?
Camellia Oil & Glycerin instantly control frizz-prone hair with the combination of hydration and defense against environmental aggressors prone to causing frizz, like humidity.
Is Smooth Proof color-safe?
Yes, Smooth Proof is suitable for color-treated hair.
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Customer Reviews
4.7 out of 5 stars 19,157
4.7 out of 5 stars 40,310
4.7 out of 5 stars 23,773
4.6 out of 5 stars 13,993
4.6 out of 5 stars 3,056
4.6 out of 5 stars 9,573
4.5 out of 5 stars 593
Price
$26.00$26.00
$26.00$26.00
$26.00$26.00
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$26.00$26.00
$26.00$26.00
$30.00$30.00
Hair Concern
Dry Hair
Color Treated Hair
Very dry, thick, coarse hair
Fine hair lacking volume
Damaged hair
Dandruff and scalp debris
Thin Hair, Hair Fall
Benefit
Optimize moisture balance
Maintain color-treated hair
Intense moisture for dry hair
Add lightweight volume
Repair & help reduce breakage
Deep cleansing
Creates fullness
Key Ingredient
Aloe
Orchid
Cupuacu Butter
Cotton Flower
Vegan Squalane
Mint & Pyrithione Zinc
Rosemary Oil and Niacinamide
Formula
Paraben-Free, Vegan
Sulfate- Free, Paraben-Free
Paraben-Free, Vegan
Paraben-Free, Silicone-Free
Paraben-Free, Silicone-Free
Paraben-Free, Vegan
Vegan, Cruelty-Free
Fragrance
Fresh, Floral
Lavender
Orange, Bergamot
Cotton Flower
Floral
Mint
Floral
Item model number : 0884486532183
UPC : 884486532183
Manufacturer : Loreal
ASIN : B0DZ6ZG34C
Best Sellers Rank: #33,935 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #105 in Hair Styling Serums
Customer Reviews: 4.5 4.5 out of 5 stars (2,989) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Smoothing Serum: This serum adds a protective layer onto the hair to provide the perfect amount of smoothness and shine to frizz-prone hair.
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.
Smooth Proof Collection: Smooth Proof Shampoo, Conditioner, and Serum are infused and micro-dosed with an anti-frizz concentrate of camellia oil and glycerin to provide the perfect amount of smoothness and shine to frizz-prone hair.
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