Sodium Lauryl Sulfate (SLS) is a strong anionic surfactant widely used for its excellent cleansing and foaming properties. It effectively removes oil and dirt, making it common in shampoos, body washes, and toothpastes. However, its strong detergent action can be irritating for some skin types.
NoneSurfactantEvidence: High
BenefitMinimal 0.5 / 4
RiskHigh 2.5 / 4
Irritation
Sensitization
Systemic exposure
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
Effective cleansing
Strong foaming agent
Things to watch
Can be irritating to skin and mucous membranes
May strip natural oils from skin and hair
Be careful combining with
None— Avoid using with other strong detergents or exfoliants to prevent excessive irritation and barrier disruption.
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Sodium Lauryl Sulfate is generally considered safe for use in rinse-off products at appropriate concentrations. However, its strong detergent properties can lead to irritation, especially in leave-on products or for individuals with sensitive skin.
Does Sodium Lauryl Sulfate cause cancer?
There is no scientific evidence to support claims that Sodium Lauryl Sulfate causes cancer. This is a common misconception, and regulatory bodies worldwide have deemed it safe for use in cosmetics.
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