K18 Hair Damage Shield Protective Conditioner Versus Dermalogica Stabilizing Repair Cream Moisturizer
This barrier-repair moisturizer is formulated around Squalane and Dipotassium Glycyrrhizate to strengthen the skin barrier and calm redness.
What's inside
What's inside
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningIsopropyl Palmitate
EmollientStearyl Alcohol
EmollientPropanediol
SolventIsopentyldiol
HumectantBehentrimonium Chloride
PreservativeTocopherol
AntioxidantTocopheryl Acetate
AntioxidantSh-Oligopeptide-78
SurfactantAlteromonas Ferment Extract
Skin ConditioningPrunus Amygdalus Dulcis Oil
Skin ConditioningSimmondsia Chinensis Seed Oil
EmollientPhospholipids
Skin ConditioningJojoba Esters
EmollientCalcium Gluconate
HumectantHydroxypropyl Guar Hydroxypropyltrimonium Chloride
Ceramide NP
Skin ConditioningPhytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate
Skin ConditioningPolyquaternium-16
Stearalkonium Chloride
PreservativeIsopropyl Alcohol
SolventButylene Glycol
HumectantGluconolactone
ChelatingPhenoxyethanol
PreservativeSodium Benzoate
MaskingCitric Acid
BufferingSodium Hydroxide
BufferingParfum
MaskingHydroxycitronellal
PerfumingWater, Isopropyl Palmitate, Stearyl Alcohol, Propanediol, Isopentyldiol, Behentrimonium Chloride, Tocopherol, Tocopheryl Acetate, Sh-Oligopeptide-78, Alteromonas Ferment Extract, Prunus Amygdalus Dulcis Oil, Simmondsia Chinensis Seed Oil, Phospholipids, Jojoba Esters, Calcium Gluconate, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Ceramide NP, Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate, Polyquaternium-16, Stearalkonium Chloride, Isopropyl Alcohol, Butylene Glycol, Gluconolactone, Phenoxyethanol, Sodium Benzoate, Citric Acid, Sodium Hydroxide, Parfum, Hydroxycitronellal
Water
Skin ConditioningButylene Glycol
HumectantGlycerin
HumectantSqualane
EmollientButyrospermum Parkii Butter
Skin ConditioningCaprylic/Capric Triglyceride
MaskingPalmitic Acid
EmollientSimmondsia Chinensis Seed Oil
EmollientGlyceryl Stearate Se
EmulsifyingPropanediol
SolventHexyldecanol
EmollientPolyglyceryl-3 Methylglucose Distearate
EmulsifyingHydroxyacetophenone
AntioxidantDipotassium Glycyrrhizate
HumectantCentella Asiatica Extract
CleansingBoerhavia Diffusa Root Extract
Skin ProtectingMyrothamnus Flabellifolia Leaf/Stem Extract
HumectantTasmannia Lanceolata Leaf Extract
Skin ConditioningBrassica Campestris Sterols
EmollientZingiber Officinale Root Extract
MaskingTocopherol
AntioxidantLactobacillus Ferment
Skin ConditioningCetylhydroxyproline Palmitamide
Skin ConditioningCaprylyl Glycol
EmollientTriolein
Skin ConditioningMaltodextrin
AbsorbentBisabolol
AntioxidantXanthan Gum
EmulsifyingCetearyl Alcohol
EmollientMyristic Acid
CleansingTetrasodium Glutamate Diacetate
ChelatingHydroxystearic Acid
Cleansing1,2-Hexanediol
Skin ConditioningSodium Hydroxide
BufferingCitric Acid
BufferingSodium Polyacryloyldimethyl Taurate
Emulsion StabilisingAmmonium Acryloyldimethyltaurate/Vp Copolymer
Stearic Acid
CleansingAcacia Senegal Gum
MaskingWater, Butylene Glycol, Glycerin, Squalane, Butyrospermum Parkii Butter, Caprylic/Capric Triglyceride, Palmitic Acid, Simmondsia Chinensis Seed Oil, Glyceryl Stearate Se, Propanediol, Hexyldecanol, Polyglyceryl-3 Methylglucose Distearate, Hydroxyacetophenone, Dipotassium Glycyrrhizate, Centella Asiatica Extract, Boerhavia Diffusa Root Extract, Myrothamnus Flabellifolia Leaf/Stem Extract, Tasmannia Lanceolata Leaf Extract, Brassica Campestris Sterols, Zingiber Officinale Root Extract, Tocopherol, Lactobacillus Ferment, Cetylhydroxyproline Palmitamide, Caprylyl Glycol, Triolein, Maltodextrin, Bisabolol, Xanthan Gum, Cetearyl Alcohol, Myristic Acid, Tetrasodium Glutamate Diacetate, Hydroxystearic Acid, 1,2-Hexanediol, Sodium Hydroxide, Citric Acid, Sodium Polyacryloyldimethyl Taurate, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Stearic Acid, Acacia Senegal Gum
Reviews
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolCitric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.
Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.
However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.
Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.
In skincare formulas, citric acid can:
While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.
Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.
Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.
However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.
Learn more about Citric AcidPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolJojoba oil is one of the most well-studied plant-derived ingredients in cosmetics. It is an emollient with a special structure.
Because it is made up of 97-98% wax esters, it closely mirrors the linear monoesters found in human sebum. This makes it skin compatible, non-greasy, and lightweight.
Unlike other plant oils, jojoba wax doesn't easily penetrate skin. It mostly works in the uppermost layers as an emollient. This just means it forms a light barrier on the skin to help retain moisture.
Formulations with jojoba esters up to 90% reduced transepidermal water loss (TEWL) and increased barrier recovery by 81% (outperforming bisabolol at 47%).
Besides barrier support, the science also suggests jojoba to have anti-inflammatory effects and potential applications for skin infections, aging, and wound healing.
Fun fact: Indigenous cultures have used jojoba as a moisturizer and to help treat burns for centuries.
Fungal acne: The Malassezia yeast is known to metabolize fatty acids in the C11-24 range and jojoba's dominant fatty acid components fall into this range. This ingredient may not be fungal acne safe.
Learn more about Simmondsia Chinensis Seed OilSodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.
In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.
Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.
"Alkaline" refers to a high pH level. A low pH level would be considered acidic.
Learn more about Sodium HydroxideTocopherol is a fat-soluble antioxidant known as Vitamin E.
You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.
Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.
It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.
This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.
This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.
In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.
Concentrations usually range from 0.1-1% in most leave-on products.
Learn more about TocopherolWater. 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