Stem Cell 2-Step Thickening System
Clinically proven two-step scalp system. The 2-Step Thickening System for fuller-looking hair, from root to end.
The Stem Cell Scalp Serum™ fortifies the follicle environment to lessen the first signs of visible shedding. The Stem Cell Thickening Foam™ styles and lifts, waking up inactive-looking follicles and delivering instant lift from the first application.
The Results:
+ 56% less visible hair fall-out in 12 weeks with Stem Cell Scalp Serum. 85.7% saw more scalp coverage.**
+ 94% noticed more volume + lift at the root from first application.*
+ Trichologist-formulated, Cold Processed® below 40°C
+ Vegan, no rinse, leave-on — both products
Valued at: $138
Stem Cell Thickening Foam™ | Full Size | 4 oz
Stem Cell Scalp Serum™ | Full Size | 2.2 oz
(All following orders save 20%)
Why You Need This
Real User Results
Stem Cell Scalp Layer (water phase): Clinically backed 2% Apple Stem Cells Stem Cells live in the bulge. They migrate into the hair bulb each growth cycle to regenerate the follicle support scalp longevity and the natural hair growth cycle. Caffeine energises scalp appearance. Sarcosine helps regulate excess sebum. Prebiotic Inulin provides scalp microbiome support. Amino Acid Complex deliver scalp hydration.
Flexible Fiber Layer (oil phase): Jojoba Oil mimics the scalp’s natural lipids for a non-greasy feel. Brassica-derived Polymers create a lightweight coating on each hair shaft — delivering thicker feel, separation, movement, and humidity resistance without silicones. Rice Protein and Hydrolyzed Corn Starch create instant expansion of the hair fiber. Pullulan Ferment wraps strands in a flexible film for airy lift.
gluten free
paraben free
silicone free
2% Apple Stem Cells
Hydrolyzed Rice Protein
Bamboo and Pea Sprout Blend (2%)
Stem Cell 2-Step Thickening System Full Ingredients
Stem Cell Scalp Serum: Aqua/Water/Eau, Glycerin, Butylene Glycol, Aloe Barbadensis Leaf Juice, Pentylene Glycol, Propanediol, Xanthan Gum, Glucosamine HCl, Caprylyl Glycol, Glycereth-26, Pisum Sativum (Pea) 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.
Can I use both products every day?
The Stem Cell Scalp Serum™ should be applied daily to clean, damp or dry hair for optimal results. The Stem Cell Thickening Foam™ is designed for use on wash days — apply to damp hair before styling.
Is this a styling system or a scalp treatment?
It's both. The Stem Cell Thickening Foam™ delivers instant root lift and flexible hold, while the Stem Cell Scalp Serum™ works daily to protect follicles and support thicker-looking hair over time. Think of it as styling powered by scalp care.
In what order should I apply the products?
Apply the Stem Cell Scalp Serum™ first to clean, damp or dry hair — massage into the scalp and leave on, no rinse needed. Then apply the Stem Cell Thickening Foam™ to damp roots and distribute evenly before styling.
Will the foam make my hair feel stiff or crunchy?
No. The formula provides lightweight, flexible hold without stiffness or sticky residue. Hair stays soft, touchable, and naturally voluminous.
Is this suitable for fine or thinning hair?
Yes. This system is specifically designed for fine to medium hair experiencing early signs of thinning. The lightweight formulas add instant volume and body without weighing hair down, while supporting scalp health over time.
Can I use this system if I have a sensitive scalp?
Yes. Both formulas are lightweight and designed to support scalp balance. The Stem Cell Scalp Serum™ is vegan, fragrance-free, and suitable for all scalp types including dry, normal, and oily.
Stem Cell Scalp Serum™:
On clean, damp, or dry hair, apply 1–2 pipettes along the hairline and part. Massage into the scalp. Do not rinse.
Stem Cell Thickening Foam™:
Shake well to activate bi-phase formula. Apply 2–4 pumps to damp scalp and roots. Distribute evenly throughout hair. Leave in. Air-dry for soft lift or blow-dry for added fullness.
post-wash
as needed
- SSummerReviewingStem Cell Thickening Foam™I recommend this productRated 5 out of 5 starsYesterday5 Stars
Love all the volume. Love how my hair feels.
- LlindaReviewingStem Cell Thickening Foam™I recommend this productRated 5 out of 5 stars1 week ago5 Stars
I really trust Act & Acre! Their stem cell line produces results that I am very happy with!
- MMiaVerified BuyerReviewingStem Cell Scalp Serum™I recommend this productWhat is your main hair goal? I want to stop my hair thinningDo you experience hair loss? Moderate or gradual hair thinningDo you experience any scalp concerns? Oiliness, ItchinessRated 5 out of 5 stars2 weeks agoThis stuff works!
My entire life, I’ve had full thick hair, but was so distraught when my hair started falling out after a 90 lb weight loss (not on glp-1). I decided to try this product and loved the formula. Not oily or sticky at all. I was extremely consistent and used it every single night and also washed my hair 1 extra time during the week because I heard that helps. Those were the only 2 things I did and it helped so much! After 3 months of use my hair is noticeably more dense and my hair stopped falling out in clumps. Super happy and thankful for this product!
- PDPaige D.Verified BuyerReviewingStem Cell Scalp Serum™I recommend this productWhat is your main hair goal? I want to grow longer ahir, I want to stop my hair thinningDo you experience hair loss? Moderate or gradual hair thinningDo you experience any scalp concerns? SensitivityRated 5 out of 5 stars3 weeks agoLove it
I have been using this serum for just over a month and absolutely love it. I started using it when I began having more shedding than usual. It is definitely helping with the shedding, it does not irritate my sensitive scalp as other scalp serums do, and it does not weigh down my fine hair at all. This will be a new staple in my daily hair routine and I will continue to purchase!
- TWToni W.Verified BuyerReviewingStem Cell Thickening Foam™I recommend this productWhat is your main hair goal? I want to stop my hair thinningDo you experience hair loss? Moderate or gradual hair thinningDo you experience any scalp concerns? No scalp concernsRated 5 out of 5 stars3 weeks agoLove it
As soon I saw that this was coming I checked every day for the drop I bought it, I love it and it has become my favorite for daily styling ❤️❤️❤️❤️❤️❤️❤️