Ingredien Curl Build Protein Booster - Fragrance Free Versus Act+Acre 2% Stem Cell H2-Grow Complex™ Scalp Serum for Hair Growth
Updated on February 06, 2025
Overview
What they are
These products are both cruelty-free and reef safe hair serums. They have a total of 7 ingredients in common
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin and scar healing
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
Ingredien Curl Build Protein Booster 9 ingredients
Act+Acre 2% Stem Cell H2-Grow Complex™ Scalp Serum for Hair Growth 28 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
Ingredien Curl Build Protein Booster 9 ingredients
Act+Acre 2% Stem Cell H2-Grow Complex™ Scalp Serum for Hair Growth 28 ingredients
Benefits
Benefits
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Aloe Barbadensis Leaf Juice
Skin Conditioning
Pentylene Glycol
Skin ConditioningPropanediol
Solvent
Xanthan Gum
EmulsifyingGlucosamine Hcl
Caprylyl Glycol
EmollientGlycereth-26
Humectant
Pisum Sativum Extract
Skin ConditioningMalus Domestica Fruit Cell Culture Extract
Skin ConditioningCarbomer
Emulsion StabilisingBambusa Vulgaris Leaf/Stem Extract
HumectantEthylhexylglycerin
Skin ConditioningSodium Hyaluronate
Humectant
Tetrasodium Glutamate Diacetate
Phenoxyethanol
Preservative
Quercus Petraea Fruit Extract
Skin ConditioningCollagen
Moisturising
Lecithin
Emollient
Leuconostoc/Radish Root Ferment Filtrate
Antimicrobial
Sodium Benzoate
Masking
Sodium Hydroxide
BufferingPotassium Sorbate
Preservative
Sodium Glycolate
BufferingSodium Formate
Buffering
Citric Acid
Buffering
Water, Glycerin, Butylene Glycol, Aloe Barbadensis Leaf Juice, Pentylene Glycol, Propanediol, Xanthan Gum, Glucosamine Hcl, Caprylyl Glycol, Glycereth-26, Pisum Sativum Extract, Malus Domestica Fruit Cell Culture Extract, Carbomer, Bambusa Vulgaris Leaf/Stem Extract, Ethylhexylglycerin, Sodium Hyaluronate, Tetrasodium Glutamate Diacetate, Phenoxyethanol, Quercus Petraea Fruit Extract, Collagen, Lecithin, Leuconostoc/Radish Root Ferment Filtrate, Sodium Benzoate, Sodium Hydroxide, Potassium Sorbate, Sodium Glycolate, Sodium Formate, Citric Acid
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Aloe Barbadensis Leaf Juice comes from leaves of the aloe plant. Aloe Barbadensis Leaf Juice is best known for helping to soothe sunburns. It is also anti-inflammatory, moisturizing, antiseptic, and can help heal wounds.
Aloe is packed with good stuff including Vitamins A, C, and E. These vitamins are antioxidants, which help fight free-radicals and the damage they may cause. Free-radicals are molecules that may damage your skin cells, such as pollution.
Aloe Barbadensis Leaf Juice also contains sugars. These sugars come in the form of monosaccharides and polysaccharides, folic acid, and choline. These sugars are able to help bind moisture to skin.
It also contains minerals such as calcium, 12 anthraquinones, fatty acids, amino acids, and Vitamin B12.
Learn more about Aloe Barbadensis Leaf JuiceCaprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidGlycerin 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 GlycerinPotassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.
This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.
Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.
You'll often find this ingredient used with other preservatives.
Learn more about Potassium SorbateSodium Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.
Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.
Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.
It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.
Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.
We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.
Learn more about Sodium BenzoateWater. 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.
