Dry Shampoo
Dry Shampoo
American United States
American United States

What's inside

What's inside

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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Butane is a gas derived from petroleum and natural gas. It is used as an aerosol propellant.

Antimicrobial, Emulsifying, Preservative

This ingredient is a preservative, antimicrobial, and emulsifier. It is often used in cosmetics for its ability to cleanse, condition, and reduce static.

Cetrimonium chloride is a quaternary ammonium salt, meaning it has a water-soluble structure.

Cosmetic Colorant

CI 17200 is a synthetic, water-soluble, reddish-pink dye. It is used purely as a cosmetic colorant.

In the US, the FDA permits this ingredient in cosmetics but it is not approved for use around the eyes while the EU allows this to be used in all cosmetic products.

The FDA requires batch-to-batch certification for this ingredient that is held to a pretty rigorous standard. That means the CI 17200 in your cosmetics has been tested and approved before it ever reaches you.

Contact allergy to cosmetic-grade dyes used at low concentrations are uncommon but has been documented before.

This ingredient also goes by the name D&C RED NO. 33.

CI 17200 has a comedogenic rating of 1 and an irritancy rating of 2 on a scale of 0-5. This is based on peer-reviewed research from the man who invented the comedogenic scale.

A 1 on the comedogenic scale is about as low as it gets without being a flat zero, and makes sense for CI 17200.

It's a water-soluble dye used at very small concentrations (typically 0.001-0.1%), so it dissolves into the water phase of a formula rather than sitting on your skin the way an oil or wax would.

The irritancy rating of 2 reflects that, like most synthetic dyes, there's a small possibility of mild irritation ( particularly for people with existing dye sensitivities).

For the vast majority of people, it's a non-issue at typical use levels.

It's also worth keeping in mind that comedogenic and irritancy ratings are tested on individual ingredients, not finished formulas. The final product's formulation, concentration, and other ingredients all play a role in how something actually behaves on your skin.

Just so you know, the FDA ban on Red Dye No. 3 refers to CI 45430, not this ingredient. CI 45430 and CI 17200 are different chemical compounds with distinct safety and regulatory histories.

It's also worth noting that Red No. 3 (CI 45430) was already banned from cosmetics back in 1990, so the 2025 action just extended the ban to food and oral drugs. CI 17200 was never part of any of this.

Learn more about CI 17200
Cosmetic Colorant

This synthetic colorant is used to add a violet color to products. It is water-soluble.

Emollient, Masking, Skin Conditioning

Diisopropyl Adipate comes from isopropyl alcohol and Adipic Acid.

It is a solvent and emollient. As a solvent, it is used to help other ingredients dissolve into the solution. It is also often used to soften hard ingredients.

Emollients help hydrate the skin by creating a thin barrier. This thin barrier prevents moisture from escaping.

Learn more about Diisopropyl Adipate
Skin Conditioning

Disiloxane is a type of silicone.

We don't have a description for Hydrofluorocarbon 152a yet.

Cosmetic Colorant, Moisturising

Magnesium Stearate is a salt that is 2 parts stearic acid and 1 part magnesium.

It is a white powder that can be used to add bulk and color to products by binding to oil ingredients.

We don't have a description for Methoxycinnamidopropyl Hydroxysultaine yet.

Oryza Sativa Starch is an absorbent and used to mattify the skin. It is a natural carbohydrate and the main component of rice. A more common name for this ingredient is 'rice starch'.

Rice starch is created by steeping broken grains in a caustic soda.

Rice extract has many skin benefits. Read more about rice extract here.

Learn more about Oryza Sativa Starch
Masking, Perfuming

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Learn more about Parfum
Pvp
Emulsion Stabilising

Pvp is a water-soluble synthetic polymer and common hairstyling ingredient. It is a film-forming ingredient and used to "hold" specific shapes of hair.

In cosmetics, PVP helps products like sunscreens and color cosmetics last longer and wear more evenly.

It is less effective in high-humidity. It tends to draw moisture, but this moisture dismantles the structure and "hold".

PVP is generally well tolerated on skin and toxicity studies are negative for dermal irritation.

Learn more about Pvp
Astringent, Solvent

SD Alcohol 40-B is created by denaturing ethanol with tert-Butyl alcohol and denatonium benzoate. It is a solvent and astringent.

The 'SD' stands for 'specially denatured'. Denatured alcohol means the structure has been altered.

The 40-B is given by the U.S. Bureau of Alcohol, Tobacco, and Firearms. This is in accordance to the method of how the alcohol was denatured.

This ingredient is a solvent alcohol.

Learn more about Sd Alcohol 40-B
Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!

Learn more about Water

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