Dr. Sheth's Ceramide And Vitamin C Sunscreen SPF 50 PA+++ Versus Dot & Key Skincare Watermelon Cooling SPF 50 Sunscreen
Updated on July 24, 2025
Overview
What they are
These products are both cruelty-free sunscreens. They have a total of 8 ingredients in common
Cool Features
They both contain hyaluronic acid and SPF
Suited For
They're both likely to be good for dry skin, brightening skin, sensitive skin and scar healing
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens or sulfates
What's Inside
They both contain silicones
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Dr. Sheth's Ceramide And Vitamin C Sunscreen SPF 50 PA+++ 51 ingredients
Dot & Key Skincare Watermelon Cooling SPF 50 Sunscreen 33 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Dr. Sheth's Ceramide And Vitamin C Sunscreen SPF 50 PA+++ 51 ingredients
Dot & Key Skincare Watermelon Cooling SPF 50 Sunscreen 33 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningPropylene Glycol
Humectant
Terephthalylidene Dicamphor Sulfonic Acid
UV Absorber
Butyl Methoxydibenzoylmethane
UV Absorber
Isododecane
EmollientGlycerin
Humectant
Phenylbenzimidazole Sulfonic Acid
UV Absorber
3-O-Ethyl Ascorbic Acid
Skin Conditioning
Tapioca Starch
Triethanolamine
BufferingCyclopentasiloxane
Emollient
Ethylhexyl Methoxycinnamate
UV Absorber
Caprylic/Capric Triglyceride
Masking
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Terminalia Ferdinandiana Fruit Extract
Antioxidant
Hyaluronic Acid
Humectant
Laminaria Digitata Extract
Skin Protecting
Hydrogenated Lecithin
Emulsifying
Cetyl-Pg Hydroxyethyl Palmitamide
Skin ConditioningCeramide EOP
Skin Conditioning
Ceramide Ng
Skin Conditioning
Ceramide NP
Skin Conditioning
Ceramide As
Skin Conditioning
Ceramide AP
Skin Conditioning
Cholesterol
Emollient
1,2-Hexanediol
Skin Conditioning
Ethylhexyl Salicylate
UV Absorber
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol
UV Filter
Decyl Glucoside
CleansingXanthan Gum
EmulsifyingDicaprylyl Carbonate
EmollientDimethicone
Emollient
Glyceryl Stearate
Emollient
Cetearyl Olivate
Sorbitan Olivate
Emulsifying
Cetearyl Alcohol
Emollient
Ceteareth-20
Cleansing
Phenoxyethanol
Preservative
Ethylhexylglycerin
Skin ConditioningXylitylglucoside
Humectant
Anhydroxylitol
Humectant
Xylitol
Humectant
Panthenol
Skin Conditioning
Sodium Polyacrylate
Absorbent
Capsicum Annuum Fruit Extract
Antimicrobial
Biosaccharide Gum-4
Skin Conditioning
Chamomilla Recutita Extract
Skin Conditioning
Allantoin
Skin Conditioning
Sodium Gluconate
Skin ConditioningBHT
Antioxidant
Zinc Oxide
Cosmetic Colorant
Water, Propylene Glycol, Terephthalylidene Dicamphor Sulfonic Acid, Butyl Methoxydibenzoylmethane, Isododecane, Glycerin, Phenylbenzimidazole Sulfonic Acid, 3-O-Ethyl Ascorbic Acid, Tapioca Starch, Triethanolamine, Cyclopentasiloxane, Ethylhexyl Methoxycinnamate, Caprylic/Capric Triglyceride, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Terminalia Ferdinandiana Fruit Extract, Hyaluronic Acid, Laminaria Digitata Extract, Hydrogenated Lecithin, Cetyl-Pg Hydroxyethyl Palmitamide, Ceramide EOP, Ceramide Ng, Ceramide NP, Ceramide As, Ceramide AP, Cholesterol, 1,2-Hexanediol, Ethylhexyl Salicylate, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Decyl Glucoside, Xanthan Gum, Dicaprylyl Carbonate, Dimethicone, Glyceryl Stearate, Cetearyl Olivate, Sorbitan Olivate, Cetearyl Alcohol, Ceteareth-20, Phenoxyethanol, Ethylhexylglycerin, Xylitylglucoside, Anhydroxylitol, Xylitol, Panthenol, Sodium Polyacrylate, Capsicum Annuum Fruit Extract, Biosaccharide Gum-4, Chamomilla Recutita Extract, Allantoin, Sodium Gluconate, BHT, Zinc Oxide
Water
Skin ConditioningEthylhexyl Methoxycinnamate
UV Absorber
Butyl Methoxydibenzoylmethane
UV Absorber
Benzophenone-3
UV Absorber
Phospholipids
Skin Conditioning
Butylene Glycol
Humectant
Glycerin
Humectant
Zea Mays Starch
AbsorbentC12-15 Alkyl Benzoate
AntimicrobialTitanium Dioxide
Cosmetic Colorant
Silica
Abrasive
Dimethicone
Emollient
Aloe Barbadensis Leaf Juice
Skin Conditioning
Ethylhexyl Palmitate
Emollient
Isopropyl Myristate
Emollient
Citrullus Lanatus Fruit Extract
Skin Conditioning
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingSorbitan Stearate
Emulsifying
Sucrose Cocoate
Emulsifying
Sodium Lactate
BufferingGlyceryl Stearate
Emollient
PEG-100 Stearate
Betaine
Humectant
Fructooligosaccharides
Humectant
Beta Vulgaris Root Extract
Skin ConditioningTocopheryl Acetate
Antioxidant
Menthyl Lactate
MaskingOxothiazolidine
Skin ProtectingPhenoxyethanol
Preservative
Sodium Benzoate
Masking
Sodium Hydroxide
BufferingSodium Gluconate
Skin ConditioningSodium Hyaluronate
Humectant
Water, Ethylhexyl Methoxycinnamate, Butyl Methoxydibenzoylmethane, Benzophenone-3, Phospholipids, Butylene Glycol, Glycerin, Zea Mays Starch, C12-15 Alkyl Benzoate, Titanium Dioxide, Silica, Dimethicone, Aloe Barbadensis Leaf Juice, Ethylhexyl Palmitate, Isopropyl Myristate, Citrullus Lanatus Fruit Extract, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sorbitan Stearate, Sucrose Cocoate, Sodium Lactate, Glyceryl Stearate, PEG-100 Stearate, Betaine, Fructooligosaccharides, Beta Vulgaris Root Extract, Tocopheryl Acetate, Menthyl Lactate, Oxothiazolidine, Phenoxyethanol, Sodium Benzoate, Sodium Hydroxide, Sodium Gluconate, Sodium Hyaluronate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Also known as Avobenzone, this ingredient is a chemical sunscreen filter that provides protection in the UV-A range.
Avobenzone is globally approved and is the most commonly used UV-A filter in the world.
Studies have found that avobenzone becomes ineffective when exposed to UV light (it is not photostable; meaning that it breaks down in sunlight). Because of this, formulations that include avobenzone will usually contain stabilizers such as octocrylene.
However, some modern formulations (looking at you, EU!) are able to stabilize avobenzone by coating the molecules.
Avobenzone does not protect against the UV-B range, so it's important to check that the sunscreen you're using contains other UV filters that do!
The highest concentration of avobenzone permitted is 3% in the US, and 5% in the EU.
Learn more about Butyl MethoxydibenzoylmethaneDimethicone is a type of synthetic silicone created from natural materials such as quartz.
What it does:
Dimethicone comes in different viscosities:
Depending on the viscosity, dimethicone has different properties.
Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.
This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.
Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.
Learn more about DimethiconeEthylhexyl Methoxycinnamate is an organic compound that provides UVB protection. It often goes by the more common name of octinoxate. It is created from methoxycinnamic acid and 2-ethylhexanol.
Ethylhexyl Methoxycinnamate absorbs UVB rays with wavelengths between 280-320 nm. UV absorbers protect your skin by using chemical reactions to convert UV rays into heat and energy.
UVB (290-320 nm) rays emit more energy than UVA rays. They are capable of damaging DNA, causing sunburns and are thought to be linked to skin cancer.
The state of Hawaii has banned sunscreens containing octinoxate due to its potential impact on coral reefs. More research is needed to bridge gaps in this research. The European Union allows higher levels of octinoxate in sunscreens than the US and Australia.
Ethylhexyl Methoxycinnamate is oil soluble. It is not stable and may lose efficacy when exposed to sunlight.
Learn more about Ethylhexyl MethoxycinnamateGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinGlyceryl Stearate is a mix of glycerin and stearic acid.
It is used to stabilize the mixing of water and oil ingredients. By preventing these ingredients from separating, it can help elongate shelf life. It can also help thicken the product's texture.
As an emollient, it helps soften skin and supports barrier-replenishing ingredients.
In cosmetics, Glyceryl Stearate is often made from vegetable oils or synthetically produced.
This ingredient may not be fungal-acne safe
Fun fact: The human body also creates Glyceryl Stearate naturally.
Learn more about Glyceryl StearatePhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
This is the synthetic salt of gluconic acid, a form of PHA and mild exfoliant.
It is mainly used to stabilize oil and butter formulations from going bad. Sodium gluconate is a humectant, pH regulator, and chelating agent.
Chelating agents help neutralize unwanted metals from affecting the formulation.
Sodium gluconate is water-soluble.
Learn more about Sodium GluconateWater. 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. Stay hydrated!
Learn more about WaterIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Dr. Sheth's Ceramide And Vitamin C Sunscreen SPF 50 PA+++ 51 ingredients
Dot & Key Skincare Watermelon Cooling SPF 50 Sunscreen 33 ingredients
Reviews
Here's what our community thinks
