Shiseido Tiss Deep Off Oil
A face cleanser with 9 ingredients.
This oil-based cleanser is mild enough to cleanse without leaving skin feeling tight or stripped.
Worth noting
Contains drying alcohol, which absorbs quickly but can be dehydrating.
We independently verify ingredients, backed by peer-reviewed research. Suggest an update.
What's inside
Concerns
Ingredients Explained
Paraffinum Liquidum is a highly-refined cosmetic-grade mineral oil. It is also known as liquid paraffin.
Despite its controversial reputation, the science is pretty clear: it's one of the most well-studied and effective moisturizing ingredients out there.
As an occlusive, it forms a protective layer on the skin that locks in moisture and prevents transepidermal water loss (TEWL). This makes it especially great for compromised skin barriers.
The "it clogs your pores" myth has been around for decades; a study found that industrial-grade mineral oil may be comedogenic but cosmetic-grade mineral oil is not (these two are very, very different).
A 2017 review concluded that cosmetic use of mineral oils and waxes does not present a risk to consumers due to absorption.
Mineral oil got a bad rap from the old rabbit ear studies. When tested on actual human skin, cosmetic-grade mineral oil showed no comedogenic activity. The rating of 0 is a correction of outdated science.
Mineral oil is an inert substance with no fatty acids so there's nothing to feed Malassezia. This ingredient is fungal acne safe.
Learn more about Paraffinum LiquidumCetyl Ethylhexanoate is an emollient ester. It comes from cetearyl alcohol and 2-ethylhexanoic acid.
Cetyl Ethylhexanoate is an emollient that adds a velvety feel to skin without being greasy or oily. Emollients help trap moisture into your skin, keeping your skin soft and hydrated.
PEG-12 Diisostearate isn't fungal acne safe.
Phenyl Trimethicone is a silicon-based polymer. It is derived from silica.
Phenyl Trimethicone is used as an emollient and prevents products from foaming.
As an emollient, it helps trap moisture in the skin. It is considered an occlusive.
Learn more about Phenyl TrimethiconePEG-10 Isostearate isn't fungal acne safe.
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 WaterIsostearyl Alcohol is a type of fatty alcohol. It's made by hydrogenating isostearic acid from plant oils (usually coconut or soybean)
Though it has "alcohol" in the name, it is not the same as solvent alcohols like alcohol denatured.
It has three roles in skincare:
Clinical patch testing found 25% of Isostearyl Alcohol in petrolatum showed only mild irritation in a small minority (your product will not have nearly as high of an amount).
This ingredient may not be fungal acne safe because it sits in the C11-C24 range that feeds the Malassezia yeast.
One last thing, the FDA allows "alcohol-free" products to contain fatty alcohols.
Learn more about Isostearyl AlcoholPEG-8 Diisostearate isn't fungal acne safe.
This ingredient is also called ethanol or ethyl alcohol. It is denatured, meaning made undrinkable for cosmetic use.
In formulas, it:
Is it bad for your skin?
The answer comes down to concentration. Patch and wash studies have found highly concentrated alcohol-based hand rubs (60-100%) cause less barrier disruption than washing with a basic detergent like SLS. The only measurable effect in these studies was a temporary dip in skin hydration.
Concentrations below 12-15% in leave-on cosmetics is generally well-tolerated. Concentrations above start to see increased transepidermal water loss (TEWL) and reduced hydration.
In concentrations about 58%, it creates temporary channels in your skin's lipid layers to become more permeable and allow other ingredients to slip through easily.
This ingredient can be up to 80% of the formula in alcohol-based perfumes.
Overall, this ingredient is probably harmless if found lower down an ingredients list but worth side-eyeing if it's high up (especially if your barrier is already struggling).
Alcohol can worsen dry skin, eczema, and oily skin, especially at higher concentrations. This is because it can increase transepidermal water loss and decrease hydration to disrupt the skin barrier.
According to the National Rosacea Society based in the US, you should be mindful of products with these alcohols in the top half of ingredients.
True allergic contact dermatitis to ethanol is uncommon, but be sure to patch test if you have dry or sensitive skin.
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Where it's from
Shiseido is a Japanese brand
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We're dedicated to providing you with the most up-to-date and science-backed ingredient info out there.
The data we've presented on this page has been verified by a member of the SkinSort Team.
Read more about us· Updated November 8, 2023 • Added by ReemSeeral_212
