Curl Centric: Curly Hair Products, Hairstyles, and Hair Growth Techniques

  • Hair Care
  • Hair Growth
  • Hairstyles
  • Locs
  • Products
  • Resources
    • Hair Calculators
    • Natural Hair Dictionary
    • Curly Hair Questions
  • Take the quiz
menu icon
go to homepage
  • Hair Care
  • Hair Growth
  • Hairstyles
  • Locs
  • Products
  • Resources
    • Hair Calculators
    • Natural Hair Dictionary
    • Curly Hair Questions
  • Take the quiz
search icon
Homepage link
  • Hair Care
  • Hair Growth
  • Hairstyles
  • Locs
  • Products
  • Resources
    • Hair Calculators
    • Natural Hair Dictionary
    • Curly Hair Questions
  • Take the quiz
×
Home » Hair Products

Is Olaplex Bad for Your Hair? Which Products? 3? 6? Shampoo?

Kenneth ByrdBy Kenneth ByrdMBA · 15+ years in hair care · Co-founder of Curl CentricUpdated Sep 13, 20268 min read · Reviewed by Kira Byrd

Evidence-basedPublishing since 2008May contain affiliate links
Close crop of a smiling woman with voluminous dark curls in a blue knit turtleneck against a white wallPin

Olaplex is a universally recognized hair care brand focused on providing effective solutions for damaged hair. Although the company has seen great success in transforming hair of all types and textures, some are skeptical about trying Olaplex's products.

If you're wondering whether Olaplex is bad for your hair, we're here to enlighten you. In this article, we will give you the rundown of Olaplex's products and help you determine whether you should add them to your hair care product lineup.

Table of Contents

  • 1. An Overview of Olaplex Products
  • 2. Olaplex Product Ingredients
  • 3. Customer Reviews on Olaplex Products
  • 4. Is Olaplex Bad for Your Hair?

An Overview of Olaplex Products

A woman with a short curly afro in a pink sweater rests a hand under her chin against a teal backdropPin

Olaplex is more than a hair product brand. It is a scientifically designed system to repair severely damaged hair from the inside out. The system uses proven technology and patented ingredients to mend the broken bonds that result in damaged strands.

Moreover, Olaplex's products target damage caused by chemicals, heat, styling, and the environment to reveal your hair's natural shine and increase its strength.

Olaplex's product line was designed to work with all hair types, including curls, to help them reach their full potential. Let's examine the brand's products and how they all fit into the revolutionary system.

Why Your Hair Isn’t Growing - free guide from Curl Centric

Free 50-page guide

Your hair is already growing. The problem is keeping it.

On average, hair grows a third to half an inch a month, and curlier hair tends to grow more slowly. If your length looks stuck, that’s your hair breaking off as fast as it grows in. Here are the seven causes of breakage and the weekly routine that stops them.

Free. One email a week after that. Unsubscribe anytime.

A woman laughs and glances sideways, hair gathered up in a loose pineapple, in a peach sweater on a pink backdropPin

Below are Olaplex's products and how the company claims they heal your tresses.

Olaplex No.0 Intensive Bond Building Treatment

No.0 Intensive Bond Building Treatment - This at-home treatment is used as a two-part system with Olaplex's No.3 hair perfector to prime the hair, preparing it to absorb nutrients.

It is scientifically proven to provide 68% more repair and 3 times more strength when used with the hair perfector treatment. Plus, it's free of DEA, aldehydes, and formaldehyde.

Olaplex No.0 Intensive Bond Building TreatmentPin
Olaplex No.0 Intensive Bond Building Treatment


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/14/2026 01:46 am GMT

Olaplex Hair Perfector No.3 Repairing Treatment

No.3 Hair Perfector - This Olaplex pre-shampoo treatment is a bond builder for damaged hair. It repairs, protects, and strengthens when used up to three times a week. It is also pH balanced to prevent scalp irritation.

Olaplex Hair Perfector No 3 Repairing TreatmentPin
Olaplex Hair Perfector No 3 Repairing Treatment


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/15/2026 12:45 am GMT

Olaplex No.4 Bond Maintenance Shampoo

No.4 Bond Maintenance Shampoo - This Olaplex shampoo provides a gentle yet vigorous cleanse while repairing and maintaining the hair's internal bonds. It is safe for both virgin and chemically treated hair. 

Olaplex No.4 Bond Maintenance ShampooPin
Olaplex No.4 Bond Maintenance Shampoo


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/14/2026 02:07 am GMT

Olaplex No.5 Bond Maintenance Conditioner

No.5 Bond Maintenance Conditioner - This Olaplex conditioner works inside the hair shaft to relink broken bonds and repair split ends, frizz, and breakage. It provides just the right amount of moisture to hydrate hair without weighing it down. The result is hair that detangles easily for increased manageability.

Olaplex No. 5 Bond Maintenance ConditionerPin
Olaplex No. 5 Bond Maintenance Conditioner


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/12/2026 01:53 am GMT

Olaplex No.6 Bond Smoother

No.6 Bond Smoother - This leave-in styling treatment keeps hair hydrated and frizz-free for up to 72 hours. It can be used on dry or damp hair for effortless detangling and styling. This smoother also improves hair porosity to shorten blow-drying times.

Olaplex No. 6 Bond SmootherPin
Olaplex No. 6 Bond Smoother


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/15/2026 02:03 am GMT

Olaplex No.7 Bonding Oil

No.7 Bonding Oil - This Olaplex oil has groundbreaking versatility. It can be used as a styling oil for added shine and strength or as a heat protectant. Plus, it can be applied daily on wet or dry hair to seal in moisture.

Olaplex No. 7 Bonding OilPin
Olaplex No. 7 Bonding Oil


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/15/2026 01:01 am GMT

Olaplex No.8 Bond Intense Moisture Mask

No.8 Bond Intense Moisture Mask - This potent Olaplex hair mask adds volume and shine to limp, dry hair. It also improves curl definition and manageability, taking the frustration out of styling your hair.

Olaplex Bond Intense Moisture MaskPin
Olaplex Bond Intense Moisture Mask


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/14/2026 12:46 am GMT

No.4P Blonde Enhancer Toning Shampoo

No.4P Blonde Enhancer Toning Shampoo - This purple shampoo is a must for those with chemically treated hair. It brightens hair and neutralizes unwanted yellow tones. This Olaplex cleanser is scientifically proven to provide 3 times more brightness compared to top purple shampoos.

Olaplex No. 4P Blonde Enhancer Toning ShampooPin
Olaplex No. 4P Blonde Enhancer Toning Shampoo


Check Price
Curl Centric may receive compensation if you make a purchase using this link, at no additional cost to you.
10/15/2026 01:11 am GMT

Olaplex Product Ingredients

A woman in the pink sweater tilts her head with both hands near her cheek, curls framing her facePin

Olaplex provides tons of scientific evidence to back up its claims about its patented ingredients. Still, you should analyze the ingredients yourself to verify the validity of these claims.

To make the process easier for you, we've done an in-depth analysis of Olaplex's ingredients to help you decide if their products are a good fit for your hair type.

The Good Ingredients

Here are the good ingredients found in Olaplex's award-winning products.

A woman in an orange sweater holds her collar with both hands, full curly hair, against a teal backdropPin
  • Bis-Aminopropyl Diglycol Dimaleate - This is the main ingredient found in all Olaplex products. It is the foundation of the bond repairing system the brand is famous for. This ingredient repairs hair on a molecular level by repairing disulfide bonds to restore hair's strength, shine, and texture. 
  • Sodium Lauroyl Methyl Isethionate - This cleansing agent is used in Olaplex's shampoo. It is a milder alternative to harsh sulfates and surfactants that rob the hair of its natural moisture. Moreover, Olaplex produces a creamy lather and allows you to cleanse your hair without damaging its protective layers.
  • Glycine - This powerful amino acid has numerous benefits for hair, including accelerated growth, increased protein production, and enhanced strength. It also boosts collagen production for a healthy, nourished scalp. Glycine is found in Olaplex's bond intense moisture mask.
  • Isohexadecane - This emollient is used in Olaplex's bond smoother to condition the hair. It boosts the gloss and smoothness of hair and makes detangling easier. Additionally, Olaplex is lightweight and won't leave residue on the hair like other conditioning agents.

The Bad Ingredients

Here are the bad ingredients you'll want to watch out for in Olaplex's products. 

A woman in the orange sweater takes a selfie with her arm outstretched and one hand behind her curlsPin
  • Dimethicone - This silicone is used in several Olaplex products to create a moisture-sealing barrier around hair strands. Although this ingredient does exactly what it's designed to do, the residual effects are harmful to your hair. Because dimethicone is waterproof, Olaplex will eventually leave a waxy buildup that requires heavy cleansers to remove.
  • Isopropyl Alcohol - This ingredient is used in many hair products to increase the absorption of other substances into the hair. It also helps products dry more quickly. But this alcohol can be severely drying to the hair, making strands weak and brittle.
  • Hexyl Cinnamal - This chemical is commonly used in Olaplex's products as a fragrance. It is known to cause contact allergies when applied to the skin. Additionally, it can cause irritation, such as rashes, bumps, or itching.
  • Polyethylene Glycols (PEGs) - PEGs are used in Olaplex products to make them thicker and easier to apply. Some PEGs contain impurities such as ethylene oxide, a known carcinogen, and respiratory irritant. Over time, exposure to PEGs can cause damage to the nervous system.

Though Olaplex boasts some fantastic reparative ingredients, it's essential to be aware of the not-so-great ingredients that are also present.

Customer Reviews on Olaplex Products

A woman in the peach sweater presses both hands to her cheeks, hair gathered up on top of her headPin

No matter how good a company claims its products are, customer reviews will always reveal the truth. And before you decide if Olaplex products are worth a try, you should know how well they've been received by the majority of customers.

To make this step in the decision-making process easier, we've analyzed verified customer reviews. Based on online reviews, a highly credible source, each one of Olaplex's products received 4 out of 5 stars.

This shows that the brand has lived up to the bold claims it has made over the years. In addition, professional stylists, everyday naturals, and even celebrities have added Olaplex to their ongoing hair care regimen.

Is Olaplex Bad for Your Hair?

Olaplex is not bad for your hair. We believe Olaplex is one of the best hair product brands on the market for those with unhealthy natural hair.

Though some of the products contain potentially harmful ingredients, they are unlikely to cause significant harm to your hair. But if the potentially harmful ingredients we discussed earlier alarm you, you can always pass on the products containing these substances.

As an alternative, you can also talk to a stylist or dermatologist in your area before you begin using any Olaplex products. 

A woman laughs at the camera in the peach sweater and blue turtleneck, hair piled loosely on topPin

Is Olaplex Causing Damage to My Hair?

Allegations and legal claims have been made that Olaplex products have caused "serious injuries" to the women's hair and scalp. Nevertheless, Olaplex has declared that its products are safe to use after a group of consumers made these claims and released test results from independent third-party laboratories to validate their claims. The decision to use Olaplex products ultimately lies with the individual, and it is advisable to consult with a stylist or dermatologist before use.

What Are the Cons of Olaplex?

Some Olaplex products contain dimethicone, which can accumulate on the hair, requiring strong cleansers to remove it. Similarly, some products have isopropyl alcohol, which can dehydrate the hair, causing it to become dry and brittle.

Claims and lawsuits have also suggested that some Olaplex products have irritants that could cause hair loss and scalp-related problems.

Nonetheless, it's noteworthy that Olaplex has declared that its products are reliable and efficient, and several users have reported favorable outcomes. Before using Olaplex products, seeking advice from a hairstylist or dermatologist may be prudent if you still have concerns.

Are There Any Side Effects of Olaplex?

The lawsuit against Olaplex Holdings Inc. revealed that some users have reported experiencing adverse effects after using Olaplex products. These side effects include bald patches, scalp sores, and severely damaged hair.

The plaintiffs maintain that the products made their hair dry, brittle, frizzy, and dull, contrary to the product's intended benefits. Nevertheless, Olaplex has asserted that its products are harmless and efficient, and millions of users have reported positive outcomes.

We recommend seeking the advice of a hairstylist or dermatologist before using Olaplex products, particularly if you have any concerns about potential side effects, as with any hair care product.

Is It Still Safe to Use Olaplex?

Olaplex contends its products are safe and effective, as evidenced by publicized test results from independent third-party labs. Numerous clients have reported favorable outcomes from using Olaplex products.

Nonetheless, there have been lawsuits and allegations alleging that certain Olaplex products contain irritants and allergens that can result in hair loss and scalp-related issues.

Ultimately, it is up to each individual to determine whether or not they want to utilize Olaplex products. Consulting with a stylist or dermatologist before using Olaplex products is recommended if you have concerns.

Related Articles

  • Olaplex Steps
  • Is Pantene Conditioner Bad for Your Hair?
  • Is Henna Safe for Your Hair?
  • Is V05 Shampoo Good for Your Hair?
  • Is Sun Bum Hair Lightener Bad for Your Hair?

To sum things up, some consumers have become wary of Olaplex's products. However, those who share this concern are few, as most consumers are satisfied with the brand's products.

We hope this article clears the air concerning the Olaplex brand and encourages you to give their products a try.

PinterestXFacebookReddit

More Natural Hair Products

  • A woman in an orange tank top smiling at the camera, her long blue-black hair crimped and flat at the crown
    Can You Put Mousse on Synthetic Hair? Synthetic Wigs, Weaves & Braids?
  • A woman smiling in round yellow-tinted sunglasses, her full afro haloed around her face, outdoors
    Best Edge Control, Tamers, and Styling Gel for Natural Hair
  • A woman in mirrored sunglasses and a knotted white tee, long honey blonde curls, against a red wall
    Wella T15 Before and After on Orange, Beige, and Yellow Hair
  • A Black woman laughing into a selfie in front of a black and white chevron wall, afro loose, tan jacket
    How to Use Flaxseed Gel for Curly Hair: DIY Hair Gel for Curls
Kenneth Byrd

About the author

Kenneth Byrd

Co-founder and Managing Partner

Publishing on textured hair since 2008MBA, University of Alabama at BirminghamExecutive education, WhartonTop 40 Under 40, Birmingham Business Journal

Kenneth does the research behind the guides here: reading the studies and checking whether a claim holds up before it gets published, under our editorial guidelines. Outside Curl Centric he leads an operations organization of more than 1,000 people, and he serves on the board of Oasis Counseling for Women and Children. Curl Centric's hair typing system is the first listed reference in a peer-reviewed paper in the International Journal of Women's Dermatology, and it is cited by Wikipedia.

More about KennethAbout Curl Centric

Kira Byrd

Hey, I’m Kira

Curl Centric is run by me and my husband Kenneth. We’ve been publishing evidence-based hair care since 2008 to help you care for your curls with confidence.

More about us →
Why Your Hair Is Not Growing: free guide

Free guide

Your hair is growing. It’s also breaking.

If your length looks stuck, your hair is breaking off about as fast as it grows in. Here are the seven causes and the weekly routine that stops them.

Free. One email a week. Unsubscribe anytime.

Start here

What is natural hair?Find your hair typeWhat is hair porosity?Build a hair regimenHair calculators

Footer

Why Your Hair Isn't Growing - free guide from Curl Centric

Free 50-page guide

Your hair is already growing. The problem is keeping it.

Hair grows about a third to half an inch a month, and the tightest curls grow slowest. If your length looks stuck, that's your hair breaking off about as fast as it grows in. We'll send you the seven causes of breakage and the weekly routine that stops them.

Free. One email a week after that. Unsubscribe anytime.

Written and reviewed by Kenneth and Kira Byrd Independently owned, publishing since 2008 950+ guides, fact-checked before publishing Editorial and advertising teams kept separate

Curl Centric®

Evidence-based curly hair care from Kenneth and Kira Byrd, a husband-and-wife team teaching textured-hair techniques since 2008.

Start Here

Natural Hair 101 Hair Typing Guide How to Grow Natural Hair Building a Hair Regimen Deep Conditioning Natural Hair Dictionary

Free Tools

Calculators & Printables Hair Growth Calculator Shrinkage Calculator Choosing Your Products Curl Science Podcast Browse All Articles

Who We Are

Kira Byrd, Co-founder Kenneth Byrd, Co-founder About Curl Centric Editorial Guidelines Contact Us FAQs Press Kit
Natural Hair Community, LLC 1401 Doug Baker Blvd, Ste 107 604, Birmingham, Alabama 35242 1 (844) 424-2875 admin@curlcentric.com Privacy Policy Terms & Conditions Sitemap

CurlCentric.com is an independent, advertising-supported publisher. Curl Centric® services, articles, content, and products are provided for informational purposes only. Curl Centric does not provide professional medical advice, diagnosis, or treatment. Curl Centric follows a strict editorial policy that produces accurate, factual, and honest content to help you make the right hair care decisions. Curl Centric has an affiliate relationship for some of the products that we recommend. We may receive compensation if purchases are made using our links, at no extra cost to you. CurlCentric.com is a participant in the Amazon Associates Program. As an Amazon Associate, we earn from qualifying purchases. To ensure that we maintain our editorial integrity, our editorial team does not receive direct compensation from our sponsors and advertisers. The product recommendations and advertisers that appear on Curl Centric are from companies that compensate us through an exclusive, full-service ad management partner. This compensation does not influence the content we publish or the product reviews shown on our site.

Copyright © Curl Centric®. All rights reserved. Curl Centric® is a trademark of Natural Hair Community, LLC.

Back to top ↑