Most Read August 27, 2025

Sodium Lauryl Sulfate (SLS): How Safe It Is?

SLS is what’s known as a “surfactant.” This means it lowers the surface tension between ingredients, which is why it’s used as a cleansing and foaming agent. Most concerns about SLS stem from the fact that it can be found in beauty and self-care products as well as in household cleaners.

What Is Sodium Lauryl Sulfate (SLS)?

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Sodium lauryl sulfate (SLS) is one of the ingredients you’ll find listed on your shampoo bottle. However, unless you’re a chemist, you likely don’t know what it is. The chemical is found in many cleaning and beauty products, but it’s frequently misunderstood.

Urban myths have linked it to cancer, skin irritation, and more. Science may tell a different story.

Where you’ll find SLS

  • Grooming products, such as shaving cream, lip balm, hand sanitizer, nail treatments, makeup remover, foundation, facial cleansers, exfoliants, and liquid hand soap
  • Hair products, such as shampoo, conditioner, hair dye, dandruff treatment, and styling gel
  • Dental care products, such as toothpaste, teeth whitening products, and mouthwash
  • Bath products, such as bath oils or salts, body wash, and bubble bath
  • Creams and lotions, such as hand cream, masks, anti-itch creams, hair-removal products, and sunscreen

If you look under your bathroom sink, or on the shelf in your shower, it’s very likely you’ll find SLS in your home. You’ll notice that all of these products are topical, or applied directly to the skin or body.

SLS is also used as a food additive, usually as an emulsifier or a thickener. It can be found in dried egg products, some marshmallow products, and certain dry beverage bases.

Why is Sodium Lauryl Sulfate so bad?

SLS strips the skin of its natural oils which causes dry skin, irritation and allergic reactions. It can also be very irritating to the eyes. Inflammatory skin reactions include itchy skin and scalp, eczema and dermatitis.

For some people, continuous use can trigger further reactions as SLS can penetrate the skin making it more vulnerable to the absorption of foreign irritants. Using these foaming products on your face can also cause the skin to become oilier as it overcompensates for the loss of natural skin oils that have been harshly stripped.

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Why your skin needs natural ingredients?

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Protection
It protects you from the outside world including chemicals and bacteria
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Balance
It regulates your temperature and fluid balance in the body through the sweat and it’s also the main reservoir for Vitamin D production in the body
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Sensation
It enables you to feel heat, cold, touch, pain as well as sense the greater world around you

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For those who want to know more about health

Eczema: Do You Suffer from Redness & Itchy Skin?

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