Function of Beauty Custom Straight Hair Shampoo Base with Coconut Water - 11 fl oz: Deep Hydration, Paraben-Free, Sulfate-Free

Common questions

Is Function of Beauty Custom Straight Hair Shampoo Base with Coconut Water - 11 fl oz: Deep Hydration, Paraben-Free, Sulfate-Free healthy?

Function of Beauty Custom Straight Hair Shampoo Base with Coconut Water - 11 fl oz: Deep Hydration, Paraben-Free, Sulfate-Free scores 72/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This shampoo is free from sulfates and parabens, which is beneficial for hair and scalp health.

Which ingredients drive Function of Beauty Custom Straight Hair Shampoo Base with Coconut Water - 11 fl oz: Deep Hydration, Paraben-Free, Sulfate-Free's score?

In Scout's ingredient-by-ingredient analysis, sodium lauroyl methyl isethionate, glycerin, sodium methyl cocoyl taurate count in its favor; phenoxyethanol, propoxytetramethyl piperidinyl dimethicone, potassium sorbate are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Function of Beauty Custom Straight Hair Shampoo Base with Coconut Water - 11 fl oz: Deep Hydration, Paraben-Free, Sulfate-Free

72 Good

Analysis updated July 2026 · How Scout scores

$9.97 · 11 fl oz · $0.91 / fluid ounce
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At a glance

Beneficial ingredients 5
Harmful ingredients 8
Category Shampoo
Summary

This shampoo is free from sulfates and parabens, which is beneficial for hair and scalp health. It includes gentle surfactants like sodium lauroyl methyl isethionate and sodium methyl cocoyl taurate, as well as hydrating ingredients like coconut fruit juice. However, the presence of phenoxyethanol, sodium chloride, non-water-soluble silicones, and synthetic fragrance detracts from its overall safety and cleanliness, impacting its score.

Key ingredients 37

cocos nucifera (coconut) fruit juice
Very Good

Coconut fruit juice is rich in nutrients and provides hydration to the hair. It is known for its conditioning properties and ability to improve hair texture. It is a natural ingredient that is beneficial for hair health.

Risks

There are minimal risks associated with coconut fruit juice, though some individuals may have allergies.

Benefits

It provides hydration and conditioning benefits to the hair.

See more about cocos nucifera (coconut) fruit juice →
sodium lauroyl methyl isethionate
Good

Sodium lauroyl methyl isethionate is a mild surfactant derived from coconut oil. It is known for being gentle on the skin and hair while providing effective cleansing. It is less likely to cause irritation compared to harsher sulfates.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It provides gentle cleansing without stripping natural oils from the hair.

See more about sodium lauroyl methyl isethionate →
glycerin
Good

Glycerin is a humectant that attracts moisture to the hair and skin. It helps to maintain hydration and improve the texture of hair. It is widely used in personal care products for its moisturizing properties.

Risks

In rare cases, glycerin can cause irritation if used in high concentrations.

Benefits

Glycerin helps to keep hair hydrated and can improve its overall appearance and feel.

See more about glycerin →
sodium methyl cocoyl taurate
Good

Sodium methyl cocoyl taurate is a mild surfactant derived from coconut oil. It is known for its gentle cleansing properties and is less likely to cause irritation compared to traditional sulfates. It helps to create a rich lather while being gentle on the hair.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It provides effective cleansing while being gentle on the hair and scalp.

See more about sodium methyl cocoyl taurate →
sodium chloride
Good

Beneficial ingredient — whole-food or functional value in this product class.

Risks

Sodium chloride can cause dryness and irritation to the scalp.

Benefits

It helps to thicken the shampoo formulation.

See more about sodium chloride →
water
Neutral

Water is a universal solvent and is used as a base in many cosmetic products. It helps to dissolve other ingredients and provides a medium for them to function. It does not have any direct benefits or risks in the context of a shampoo.

Risks

There are no significant risks associated with water in cosmetic formulations.

Benefits

Water helps to hydrate and dissolve other beneficial ingredients in the formulation.

See more about water →
peg-120 methyl glucose dioleate
Neutral

PEG-120 methyl glucose dioleate is used as a thickener and emulsifier in cosmetic formulations. It helps to stabilize the product and improve its texture. It is generally considered safe for use in cosmetics.

Risks

There are concerns about PEG compounds potentially being contaminated with harmful impurities.

Benefits

It helps to improve the texture and stability of the shampoo.

cocoamidopropyl hydroxysultaine
Neutral

Cocoamidopropyl hydroxysultaine is a mild surfactant and foam booster derived from coconut oil. It is used to enhance the cleansing and foaming properties of shampoos. It is generally considered safe and non-irritating.

Risks

Some individuals may experience mild irritation or allergic reactions.

Benefits

It enhances the foaming and cleansing properties of the shampoo.

sodium methyl isethionate
Neutral

Sodium methyl isethionate is a mild surfactant used in personal care products. It is known for being gentle on the skin and hair while providing effective cleansing. It is less likely to cause irritation compared to harsher sulfates.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It provides gentle cleansing without stripping natural oils from the hair.

lauric acid
Neutral

Lauric acid is a fatty acid derived from coconut oil. It is used in shampoos for its cleansing and emulsifying properties. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with lauric acid, though some individuals may experience mild irritation.

Benefits

It helps to cleanse and emulsify the shampoo formulation.

acrylates crosspolymer-4
Neutral

Acrylates crosspolymer-4 is used as a thickening agent in cosmetic formulations. It helps to improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient, though some individuals may experience mild irritation.

Benefits

It helps to improve the texture and stability of the shampoo.

trisodium ethylenediamine disuccinate
Neutral

Trisodium ethylenediamine disuccinate is a chelating agent used to improve the stability of cosmetic formulations. It helps to bind metal ions and prevent them from affecting the product's performance. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the stability and performance of the shampoo.

See more about trisodium ethylenediamine disuccinate →
glycol distearate
Neutral

Glycol distearate is used as an opacifying agent and emulsifier in shampoos. It helps to improve the texture and appearance of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and appearance of the shampoo.

See more about glycol distearate →
sodium laurate
Neutral

Sodium laurate is a surfactant used for its cleansing properties. It helps to remove dirt and oil from the hair. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with sodium laurate, though some individuals may experience mild irritation.

Benefits

It provides effective cleansing for the hair.

methyl gluceth-10
Neutral

Methyl gluceth-10 is a humectant and emollient used in cosmetic formulations. It helps to moisturize and soften the hair. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to moisturize and soften the hair.

caprylyl glycol
Neutral

Caprylyl glycol is used as a skin conditioning agent and preservative booster. It helps to improve the texture and stability of cosmetic formulations. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

See more about caprylyl glycol →
chlorphenesin
Neutral

Chlorphenesin is a preservative used to prevent microbial growth in cosmetic products. It is effective but can cause skin irritation in some individuals. It is generally considered safe for use in cosmetics.

Risks

Chlorphenesin can cause skin irritation in some individuals.

Benefits

It helps to preserve the product and extend its shelf life.

See more about chlorphenesin →
polyquaternium-7
Neutral

Polyquaternium-7 is a conditioning agent used to improve the texture and manageability of hair. It helps to reduce static and frizz. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and manageability of hair.

See more about polyquaternium-7 →
trideceth-6
Neutral

Trideceth-6 is an emulsifier used to blend oil and water-based ingredients in cosmetic formulations. It helps to improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

See more about trideceth-6 →
c11-15 pareth-7
Neutral

C11-15 pareth-7 is a surfactant and emulsifier used in cosmetic formulations. It helps to improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

ethylhexylglycerin
Neutral

Ethylhexylglycerin is used as a skin conditioning agent and preservative booster. It helps to improve the texture and stability of cosmetic formulations. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

See more about ethylhexylglycerin →
hexylene glycol
Neutral

Hexylene glycol is used as a solvent and viscosity agent in cosmetic formulations. It helps to improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

See more about hexylene glycol →
guar hydroxypropyltrimonium chloride
Neutral

Guar hydroxypropyltrimonium chloride is a conditioning agent derived from guar gum. It helps to improve the texture and manageability of hair. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and manageability of hair.

See more about guar hydroxypropyltrimonium chloride →
hydroxypropyl methylcellulose
Neutral

Hydroxypropyl methylcellulose is used as a thickening agent in cosmetic formulations. It helps to improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to improve the texture and stability of the shampoo.

See more about hydroxypropyl methylcellulose →
sodium benzotriazolyl butylphenol sulfonate
Neutral

Sodium benzotriazolyl butylphenol sulfonate is used as a UV absorber in cosmetic formulations. It helps to protect the product from degradation due to sunlight exposure. It is generally considered safe for use in cosmetics.

Risks

There are minimal risks associated with this ingredient.

Benefits

It helps to protect the product from UV degradation.

citric acid
Neutral

Citric acid is used to adjust the pH of cosmetic formulations. It helps to maintain the stability and effectiveness of the product. It is generally considered safe for use in cosmetics.

Risks

Citric acid can cause mild skin irritation in some individuals.

Benefits

It helps to maintain the stability and effectiveness of the shampoo.

See more about citric acid →
citronellol
Neutral

Citronellol is a fragrance component used to provide a floral scent. It can cause skin irritation and allergic reactions in some individuals. It is generally considered safe for use in cosmetics.

Risks

Citronellol can cause skin irritation and allergic reactions.

Benefits

It provides a floral scent to the shampoo.

See more about citronellol →
blue 1
Neutral

Blue 1 is a synthetic dye used to provide color to cosmetic products. It is generally considered safe for use in cosmetics. It is widely used in personal care products for its coloring properties.

Risks

Blue 1 can cause mild skin irritation in some individuals.

Benefits

It provides color to the shampoo.

See more about blue 1 →
red 33
Neutral

Red 33 is a synthetic dye used to provide color to cosmetic products. It is generally considered safe for use in cosmetics. It is widely used in personal care products for its coloring properties.

Risks

Red 33 can cause mild skin irritation in some individuals.

Benefits

It provides color to the shampoo.

phenoxyethanol
Bad

Phenoxyethanol is a preservative used in cosmetics to prevent microbial growth. It is effective but can cause skin irritation and allergic reactions in some individuals. It is a controversial ingredient due to potential health concerns.

Risks

Phenoxyethanol can cause skin irritation and allergic reactions.

Benefits

It helps to preserve the product and extend its shelf life.

See more about phenoxyethanol →
propoxytetramethyl piperidinyl dimethicone
Bad

Propoxytetramethyl piperidinyl dimethicone is a silicone used for its conditioning properties. It can cause buildup on the hair, leading to dullness and brittleness over time. It is not water-soluble and can be difficult to remove from the hair.

Risks

It can cause buildup on the hair, leading to dullness and brittleness.

Benefits

It provides conditioning benefits and improves hair manageability.

potassium sorbate
Bad

Synthetic preservative — flagged in daily-use products.

Risks

Potassium sorbate can cause mild skin irritation in some individuals.

Benefits

It helps to preserve the product and extend its shelf life.

See more about potassium sorbate →
sodium benzoate
Bad

Synthetic preservative that can form benzene in the presence of vitamin C.

Risks

Sodium benzoate can cause mild skin irritation in some individuals.

Benefits

It helps to preserve the product and extend its shelf life.

See more about sodium benzoate →
citral
Bad

Processed additive flagged under Scout's ingredient doctrine.

Risks

Citral can cause skin irritation and allergic reactions.

Benefits

It provides a lemon-like scent to the shampoo.

See more about citral →
limonene
Bad

Processed additive flagged under Scout's ingredient doctrine.

Risks

Limonene can cause skin irritation and allergic reactions.

Benefits

It provides a citrus scent to the shampoo.

See more about limonene →
linalool
Bad

Processed additive flagged under Scout's ingredient doctrine.

Risks

Linalool can cause skin irritation and allergic reactions.

Benefits

It provides a floral scent to the shampoo.

See more about linalool →
fragrance
Very Bad

Fragrance is used to provide a pleasant scent to cosmetic products. It can cause skin irritation and allergic reactions in some individuals. It is a controversial ingredient due to potential health concerns.

Risks

Fragrance can cause skin irritation and allergic reactions.

Benefits

It provides a pleasant scent to the shampoo.

See more about fragrance →

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