Necessaire The Body Serum (Le Serum Corps) Versus Good Molecules B5 Hydrating Body Serum
Updated on May 12, 2025
Overview
What they are
These products are both vegan and reef safe . They have a total of 8 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, oils, parabens, silicones or sulfates
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
Necessaire The Body Serum (Le Serum Corps) 16 ingredients
Good Molecules B5 Hydrating Body Serum 16 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Necessaire The Body Serum (Le Serum Corps) 16 ingredients
Good Molecules B5 Hydrating Body Serum 16 ingredients
Key Ingredients
Benefits
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Coconut Alkanes
Emollient
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Sodium Hyaluronate
Humectant
Niacinamide
Smoothing
Panthenol
Skin Conditioning
Ceramide NP
Skin Conditioning
Pentylene Glycol
Skin ConditioningCoco-Caprylate/Caprate
Emollient
Trisodium Ethylenediamine Disuccinate
Hydrogenated Lecithin
Emulsifying
Polyglyceryl-10 Stearate
Skin Conditioning
Sucrose Stearate
EmollientGluconolactone
Skin Conditioning
Sodium Benzoate
Masking
Water, Glycerin, Coconut Alkanes, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Sodium Hyaluronate, Niacinamide, Panthenol, Ceramide NP, Pentylene Glycol, Coco-Caprylate/Caprate, Trisodium Ethylenediamine Disuccinate, Hydrogenated Lecithin, Polyglyceryl-10 Stearate, Sucrose Stearate, Gluconolactone, Sodium Benzoate
Water
Skin ConditioningPanthenol
Skin Conditioning
Propanediol
Solvent
Coco-Caprylate/Caprate
Emollient
Glycerin
Humectant
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Glyceryl Glucoside
Humectant
Caprylyl Glyceryl Ether
CleansingGlyceryl Stearate Se
Emulsifying
Hydrogenated Lecithin
Emulsifying
Polyglutamic Acid
Skin Conditioning
Sodium Hyaluronate
Humectant
Caprylhydroxamic Acid
Capryloyl Salicylic Acid
Exfoliating
Beta-Glucan
Skin Conditioning
Trisodium Ethylenediamine Disuccinate
Water, Panthenol, Propanediol, Coco-Caprylate/Caprate, Glycerin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Glyceryl Glucoside, Caprylyl Glyceryl Ether, Glyceryl Stearate Se, Hydrogenated Lecithin, Polyglutamic Acid, Sodium Hyaluronate, Caprylhydroxamic Acid, Capryloyl Salicylic Acid, Beta-Glucan, Trisodium Ethylenediamine Disuccinate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Stay hydrated!
Learn more about WaterGlycerin 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 GlycerinAmmonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.
AAVC is able to increase the consistency and viscosity of products due to its large molecule size. It also prevents ingredients from separating.
Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronatePanthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolCoco-Caprylate/Caprate is created from fatty coconut alcohol, caprylic acid, and capric acid.
It is a lightweight emollient. Emollients create a thin barrier on the skin to trap moisture in. This helps keep your skin hydrated and soft.
Once applied, Coco-Caprylate/Caprate is absorbed quickly and leaves a silky feel.
Coco-Caprylate/Caprate may not be fungal acne safe.
Learn more about Coco-Caprylate/CaprateTrisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
Hydrogenated Lecithin is created from the hydrogenation of lecithin (a group of phospholipids). Hydrogenation is a chemical reaction between hydrogen and another element.
This ingredient is an emollient and emulsifier. As an emollient, it helps soften skin by trapping moisture within. As an emulsifier, it prevents oil and water ingredients from separating.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Necessaire The Body Serum (Le Serum Corps) 16 ingredients
Good Molecules B5 Hydrating Body Serum 16 ingredients
Reviews
Here's what our community thinks
Necessaire The Body Serum (Le Serum Corps) 16 ingredients
Really gorgeous serum. I apply this to wet skin after a shower and let it soak in, then finish up with a urea cream. Makes my skin soft and moisturised. A friend even commented the other day on how moisturised my skin felt when she touched my arm!
Good Molecules B5 Hydrating Body Serum 16 ingredients
Hoping for full body hydration to ease genetic dry skin and found more sensitivity to ingredients! I believe Glyceryl Stearate S/E is the culprit. I seem to be especially sensitive to Stearic acid-related ingredients. So at least I’ve learned that.
