Ingredients to Avoid in Curly Hair Products
It can be so confusing to know which ingredients are healthy for your curly hair, and which ingredients to avoid in curly hair products. You might feel like you have to become a chemist just to decipher the labels! To save you time and research, you can benefit from my research instead. Make sure to save this post so you can read labels to find the best products for your curls!
Sulfates are harsh detergents that strip oil and dirt out of your hair so well, they actually deplete the naturally produced sebum that moisturizes your hair. While sulfates can be beneficial for hair that gets oily quickly or has looser curls, they’re usually a no-no for drier curly hair. Here are the ones to avoid:
- Alkylbenzene sulfonates
- Alkyl Benzene Sulfonate
- Ammonium laureth sulfate
- Ammonium lauryl sulfate
- Sodium cocoyl sarcosinate
- Ammonium Xylenesulfonate
- Sodium C14-16 Olefin Sulfonate
- Sodium laureth sulfate
- Ethyl PEG-15 cocamine sulfate
- Sodium lauryl sulfate
- Sodium lauryl sulfoacetate
- Dioctyl sodium sulfosuccinate
- Sodium myreth sulfate
- Sodium Xylenesulfonate
Check out my Amazon storefront here to know which products I recommend getting. These range from high end to bargain brands, and accessories like sleeping bonnets and diffusers. I’ve covered it all and make shopping easier for you!
Gentle cleansers that are non-drying and safe for curly hair:
- Cocamidopropyl betaine
- Coco betaine
- Disodium cocoamphodiacetate
- Disodium cocoamphodipropionate
- Sodium cocoyl isethionate
- Behentrimonium methosulfate
- Disodium lautreth sulfosuccinate
- Babassuamidopropyl betaine
Silicones are synthetic resins and are found in many hair products due to their ability to add shine and condition the hair. Sounds good, right? Well, the problem is that they are not water soluble, so they produce build up on the hair and scalp that no-poo shampoos cannot remove. There are many different names for them, but to keep it simple, anything ending in: “cone,” “conol,” “col,” or “xane,” should be avoided. Also, the only exceptions here are those ingredients with the abbreviations “PEG” or “PPG” in front of them. This abbreviation will alert you that they were made to be water-soluble, and won’t produce the build-up other silicones are known to cause.
- Cetearyl Methicone
- Cetus Dimethicone
- Stearyl Dimethicone
These are a little better but still can cause buildup:
Here are some water-soluble ones that do cause buildup over time (just slower):
- Behenoxy Dimethicone
- Stearoxy Dimethicone
Avoid Mineral Oils
Minerals oils are a derivative of crude oil (petrolatum) that is refined into a slippery liquid. They are lightweight and inexpensive, which is why so many companies use it. It coats the hair like silicones do, blocking the hair from getting water. So at first it can make the hair shiny and soft, but then actually ends up drying hair out and takes a strong sulfate shampoo to remove.
Can Clog the Pores
It also is considered to be comedogenic, meaning, it clogs the pores. Therefore, this is NOT good considering we want our scalps to be clean and clear so that our hair can grow healthy and strong! Plus, if it washes down onto your neck, face, shoulders and back, it can contribute to pimples and acne.
Can Contain Many Toxins
There are different grades of mineral oils and there are many chemicals used in the refining process. Some studies have been done that have concluded it does contain toxins, but the result to our health is still undetermined. (Read more here.)
Avoid Drying Alcohols
Not all alcohols are bad, but there are some ones that are too drying for curly hair. The drying alcohols are short-chain ones, and the moisturizing ones are long-chain, fatty alcohols that come from plants, animals and oils.
- SD Alcohol 40
- Ethanol Alcohol
- Ethyl Alcohol
- Propyl Alcohol
- SD Alcohol
- Propanol Alcohol
- Isopropyl Alcohol
Optional: Artificial Fragrances
Avoiding artificial fragrances is really more of a personal choice as fragrance doesn’t affect the health of your hair (that we know of!). It’s not always possible and I will buy products that have artificial fragrances in them if the scent is isn’t too strong or I just LOVE the product and it what it does for my hair.
So the main I avoid fragrance is that it stands for more than 3,000 different chemicals! Some are known to be carcinogenic and irritating, but since the actual chemical isn’t disclosed, we don’t know if it’s a safe or a toxic one. I know many people who get headaches from strong scents, too.
Brands that contain no artificial fragrances are usually organic ones like InnerSense Organics, and many of Shea Moisture’s products are scented with essential oils.
Irritating and Toxic Preservatives
Preservatives are a necessary ingredient to keep hair products shelf-stable, but some are very irritating and considered to be toxic.
- Formaldhyde – a common preservative (I mean, duh, to embalm the dead (blech!) that is known to be carcinogenic to both animals and humans. No cancer, thank you!
- These preservatives release formaldehyde: Diazolidinyl urea, DMDM, Hydantoin, Glyoxal, Imidazolidinyl urea, Polyoxymethylene urea, Quaternium-15, Sodium hydroxymethylglycinate
- Methylisothiazolinone – is a common preservative in hair products, linked to lung toxicity, allergic reactions, and possible neurotoxicity.
Parabens are very effective, cheap preservatives that are naturally found in plants. And they also prevent harmful mold and bacteria from growing products. But many also consider them to be xenoestrogens, which can disrupt hormones and even pose a cancer risk. For example, parabens have been found in breast cancer cells, which indicates that parabens may act like estrogen in the body (source).
The most common parabens are methylparaben, ethylparaben, propylparaben, butylparaben, isopropylparaben and isobutylparaben.
Phthalates are a group of chemicals used to soften and increase the flexibility of plastic and vinyl. So the health effects of exposure to phthalates are not yet fully known but are being studied by several government agencies.
One phthalate, Di (2-ethylhexyl) phthalate (DEHP), is an endocrine disruptor and can cause cancer. Some phthalates may affect human reproduction or development.
Phthalates had been used to make pacifiers, soft rattles, and teething rings. However they have not been allowed in those products since 1999. So I don’t know about you, but I’m not excited to have them in my beauty and hair products, either!
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Hello! Is Hydroxypropylsulfonate safe for curly hair?
According to curlsbot.com, it is a Curly Girl safe ingredient!
Hi Sara, I am so glad I found you! I have 3b curly hair (I think, Italian/Mexican) with low porosity. Having difficulty finding products with little to no fragrances, since they trigger migraines. Do you have a post on products that can be found on the “low budget” like at Sally’s or Ulta’s. I love amazon but need to see if the fragrance will be too strong. Thank you. Have a wonderful Christmas with your family.
Hi Liz! So it’s super hard to find products with little to no fragrances at Sally’s. But the ones with the mildest scents, and scented only with essential oils, are Inner Sense Organics. I’ve only seen it available on their website, Amazon, and curly hair salons. They might have some samples on their website you can buy!
Can you recommend shampoo’s and conditioner’s that do not contain any of the bad ingredients listed in this article ?
Hi Liz! Yes, I highly recommend InnerSense Organics products. Their whole line is amazing! I have a YouTube video on which products of their’s I use here – https://www.youtube.com/watch?v=UhQcY3esl3w&t=742s.
Is Phenyl Trimethicone good for hair
Hi! That ends in cone so it is most likely a silicone, which is an ingredient to avoid.
I found your recommended products on Amazon but found that some contain the very ingredients on your avoid list like C 14-16 sodium sulfonate and silicones. I was thinking this is perfect, I will buy these products but now Im confused. Can you clarify please ?
Hi! Sure, I’d love to help. Which products contained those ingredients?
My little girl’s conditioner changed the formula. I use Young Living Copaiba Vanilla conditioner every day for her, and now they have changed it. They removed hydrolized silk, and included Diheptyl Succinate and Capryloyl Glycerin Sebacic Acid Copolymer among whatever else is different. A web search found these new things together are an alternative to silicone, and mimic silicone, and create a film on hair. What do you think?