10 Best hair straightening products without formaldehydes of 2025

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1

agilise
AGILISE UNIKA Hair Straightening Cream, Brazilian Blowout Products, Formaldehyde-Free Hair Straightener Cream, Smoothing for Straight Hair, Straightening Hair Products, Ojon Oil - 33.8 fl oz / 1L
Main highlights

Formaldehyde-Free Formula with Natural Smoothness
Unika Ojon provides natural smoothness through a formaldehyde-free formula enriched with amino acids, proteins, and seaweed extract, protecting the scalp and hair.

Ideal for Deep Hydration and Volume Reduction
Perfect for those seeking deep hydration and volume reduction, Unika Ojon nourishes the hair with Caribbean oil, vegetal keratin, and essential oils.

Highly Praised for Making Hair Silky and Manageable
Customers love Unika Ojon for its ability to make hair silky, tangle-free, shiny, and manageable, especially for wavy and curly hair types.
9.8

Exceptional

Our Rating

9.9
Hair quality

9.7
Moisturizing

9.3
Aroma
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Real users impact

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Based on millions of stores and reviews

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Value for Money

2

Expert Hair
Bio Protein Botox Hair Treatment - Formaldehyde-Free Straightening, Anti-Frizz Keratin with Organic Keratin for Sleek Hair, 1kg
Main highlights

Long-Lasting Frizz Control
Provides up to six months of smooth, shiny hair.

Ideal for Home Use
Achieve professional-quality results easily at home.

Praised for Softness
Customers love the softness and manageability it offers.
Key specs
- Key Ingredients:Shea Butter, Coconut Oil
- Results Duration:Up to 6 months
- Frizz Control:Long-lasting frizz control
- Hair Type:Various hair types
- Application Method:Wash, apply, rinse, style
9.6

Exceptional

Our Rating
3

KERAGEN
Keragen Brazilian Keratin Smoothing Treatment | Formaldehyde-Free Blowout for Frizzy, Dry, or Damaged Hair | Smooth, Silky Results | Fine to Medium Hair | 16 Oz
Main highlights

Keratin and Collagen Infusion
Strengthens hair with keratin and collagen for improved resilience and shine.

Ideal for Fine to Medium Hair
Perfectly suited for transforming fine to medium hair types.

Praised Frizz Control
Customers love its ability to reduce frizz and enhance smoothness.
Key specs
- Key Ingredients:Keratin, Collagen
- Results Duration:Long-lasting
- Frizz Control:Advanced frizz control
- Hair Type:Fine to medium
- Application Method:N/A
9.3

Excellent

Our Rating
4

ALFAPARF MILANO
Alfaparf Milano Home Keratin Hair Treatment - Lisse Design Express Brazilian Hair Straightening and Smoothing - Formaldehyde Free - Sulfate Free
Main highlights

Gentle Smoothing Treatment
Soft keratin formula reduces brittleness and breakage, enhancing hair texture.

DIY Friendly Application
Ideal for home use, easy and quick to apply.

Odorless and Effective
Praised for being odorless, offering smooth and silky results.
9.1

Excellent

Our Rating

8.2
Simple to use

8.0
worth the money
5

Kerazon Professional
KERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz/60ml - At Home Keratin Treatment Smoothing and Straightening - Keratina para Alisar el Pelo - For All Hair Types

20% Off
Main highlights

Immediate Results and No Downtime
Experience instant hair transformation without waiting, perfect for busy schedules.

Ideal for At-Home Use
Perfect for DIY hair treatment enthusiasts seeking salon-quality results.

Praised for Silkiness and Shine
Customers love the silky, shiny finish this treatment provides.
Key specs
- Key Ingredients:N/A
- Results Duration:Immediate results
- Frizz Control:Yes
- Hair Type:Colored hair
- Application Method:Sensitivity test recommended
8.9

Very Good

Our Rating

8.2
Gentle

8.2
Simple to use

8.0
worth the money
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6

KCB PROFESSIONAL
KCB Professional Brazilian Keratin, 1 Step Keratin Treatment Kit at Home. Keratina para Alisar el Pelo. Straightening and Frizz Control, All Hair Types, Formaldehyde Free, 3.38Floz

19% Off
Main highlights

Key Features and Benefits
Formaldehyde-free keratin treatment for smooth, frizz-free hair at home.

Ideal Use Cases
Perfect for those seeking salon-quality results without salon costs.

Praised Feature
Easy application process with results comparable to salon treatments.
Key specs
- Key Ingredients:Protein-enriched formula
- Results Duration:Up to 12 weeks
- Frizz Control:Yes, up to 3 months
- Hair Type:All hair types
- Application Method:Home application
8.8

Very Good

Our Rating
7

LAZZIOS COSMETICS

Lazzios Caviar Organic Hair Protein – Brazilian Straightening Treatment – Formaldehyde-Free, Anti-Frizz Hair Organic Formula with Hyaluronic Acid, Hydrolyzed Keratin, Caviar Extract – (120ml)

12% Off
8.7

Very Good

Our Rating
8

I Belli Capelli

Torrano Cream Nano Keratin Hair Treatment, Straightening Hair 1 Step, Formaldehyde Free-Nanoplastia Para Alisar Cabello, Keratina Organica Sin Formol -Brazilian Nano Keratin 1 Pack, 16.9Fl.oz (500ml)
8.6

Very Good

Our Rating
9

Amazonliss
Amazonliss Hair Straightening Brazilian Treatment Tanino - Taninoplastia Hair Treatment - Smoothing, Hydrating, Repairing, Extreme Shine Effect - Formaldehyde Free - 2.03 Fl.oz (Tanino)

13% Off
Main highlights

Key Features and Benefits
Innovative hair restoration and straightening using tannins, excluding harmful chemicals for healthy, strong, and silky hair.

Ideal Use Cases
Perfect for damaged or lifeless hair needing restoration, strength, and smoothness without harsh chemicals.

Customer Reviews Highlight
Most praised for its ability to significantly improve hair health and texture, leaving hair smooth, strong, and revitalized.
8.4

Good

Our Rating

8.9
Simple to use

8.2
Aroma

8.0
worth the money
10

Amazonliss
Brazilian Keratin Smoothing Treatment, Blowout Straightening System for Dry and Damaged Hair - One Step Protein Hair Treatment Formaldehyde Free,Eliminates Curls and Frizz(Keratin 2.02oz)
Main highlights

Key Features and Benefits
Restores keratin for shiny, strong hair; no formaldehyde; works immediately with lasting results. Ideal for revitalizing damaged, curly hair.

Ideal Use Cases
Perfect for post-coloring, bleaching, or for naturally frizzy, brittle hair. Recommended every 3-4 months for cumulative keratin enrichment.

Customer Reviews Summary
Most praised for significantly softer, smoother hair after just one use, with noticeable reduction in frizz and damage.
Key specs
- Key Ingredients:Wheat, soy, corn, rice proteins
- Results Duration:Long-term
- Frizz Control:Effective for frizzy hair
- Hair Type:Fine, thin, wavy, frizzy
- Application Method:Keratin straightening
8.2

Good

Our Rating

8.4
Simple to use

8.0
worth the money

8.0
Aroma

10 Best hair straightening products without formaldehydes of 2025

1

AGILISE UNIKA Hair Straightening Cream, Brazilian Blowout Products, Formaldehyde-Free Hair Straightener Cream, Smoothing for Straight Hair, Straightening Hair Products, Ojon Oil - 33.8 fl oz / 1L

9.9

9.7

9.3

How do we rank?

How do we rank?

Analyzing top stores

2

Bio Protein Botox Hair Treatment - Formaldehyde-Free Straightening, Anti-Frizz Keratin with Organic Keratin for Sleek Hair, 1kg

3

Keragen Brazilian Keratin Smoothing Treatment | Formaldehyde-Free Blowout for Frizzy, Dry, or Damaged Hair | Smooth, Silky Results | Fine to Medium Hair | 16 Oz

4

Alfaparf Milano Home Keratin Hair Treatment - Lisse Design Express Brazilian Hair Straightening and Smoothing - Formaldehyde Free - Sulfate Free

8.2

8.0

5

KERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz/60ml - At Home Keratin Treatment Smoothing and Straightening - Keratina para Alisar el Pelo - For All Hair Types

8.2

8.2

8.0

6

KCB Professional Brazilian Keratin, 1 Step Keratin Treatment Kit at Home. Keratina para Alisar el Pelo. Straightening and Frizz Control, All Hair Types, Formaldehyde Free, 3.38Floz

7

Lazzios Caviar Organic Hair Protein – Brazilian Straightening Treatment – Formaldehyde-Free, Anti-Frizz Hair Organic Formula with Hyaluronic Acid, Hydrolyzed Keratin, Caviar Extract – (120ml)

8

Torrano Cream Nano Keratin Hair Treatment, Straightening Hair 1 Step, Formaldehyde Free-Nanoplastia Para Alisar Cabello, Keratina Organica Sin Formol -Brazilian Nano Keratin 1 Pack, 16.9Fl.oz (500ml)

9

Amazonliss Hair Straightening Brazilian Treatment Tanino - Taninoplastia Hair Treatment - Smoothing, Hydrating, Repairing, Extreme Shine Effect - Formaldehyde Free - 2.03 Fl.oz (Tanino)

8.9

8.2

8.0

10

Brazilian Keratin Smoothing Treatment, Blowout Straightening System for Dry and Damaged Hair - One Step Protein Hair Treatment Formaldehyde Free,Eliminates Curls and Frizz(Keratin 2.02oz)

8.4

8.0

8.0

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