Daily Targeted care for low density areas, apply to areas where thinning is most prominent.
STIM-Foll: Weightless, Non-Oily Daily Leave-In Scalp Serum
Choose this $32 weightless, non-oily daily leave-in scalp serum on its own or within a Hair Bloom system. You can add STIM-Foll to your existing routine without changing your shampoo and conditioner. It has a distinct role from Vitality 11 pre-wash oil; follow the serum’s individual directions.
‘Koriem’s Botanical + Elemental + Skin Care Active Philosophy
Rooted in the earth. Refined for scalp care. STIM-Foll brings botanical extracts, copper-containing peptides and skincare actives together in one thoughtfully layered daily formula.
Elemental — Copper at the heart of peptide care
AHK-Cu (Copper Tripeptide-3) and GHK-Cu (Copper Tripeptide-1) make the elemental pillar tangible: copper paired with peptides in a cosmetic scalp-care formula. These are two distinct copper peptides, each part of STIM-Foll’s comprehensive ingredient approach.
Botanical: Pea-sprout, red-clover and other botanical components within the formula’s named complexes, alongside black seed oil and saw palmetto.
Skincare actives: Niacinamide, sodium hyaluronate, panthenol, beta-glucan and ectoin complement the peptide system with hydration and scalp-conditioning care.
Precise scalp care. A beautifully considered formula. STIM-Foll is a weightless, non-oily daily leave-in scalp serum with 3% Redensyl®, Procapil®, Capixyl™, AnaGain™ and copper peptides, complemented by panthenol, niacinamide and other scalp hydrators.
Designed for focused care in lower-density areas, it supports a conditioned scalp and the appearance of stronger, fuller and more resilient-looking hair. Place it between wash days, following the label consistently.
At a Glance
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Best for: Focused care for areas that appear sparse or less dense
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Routine step: Daily leave-on scalp serum
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Use: Once daily or at least 4–5 times weekly; do not rinse
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Featured formula: 3% Redensyl®, Procapil®, Capixyl™, AnaGain™, copper peptides, saw palmetto and black seed oil
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Benefits: Cosmetic support for fuller-, denser- and healthier-looking hair.
Understanding Sudden Shedding
Telogen effluvium is a disruption of the hair cycle that can cause increased shedding around three months after a trigger. More hairs enter the resting phase; this does not mean the follicles have died. New growth can begin as older hairs are released.
Cosmetic serums and oils cannot instantly reverse this cycle or address every underlying cause. STIM-Foll’s role is daily scalp hydration and conditioning, with cosmetic support for fuller-looking hair over time. Sudden, severe or persistent shedding deserves assessment by a qualified healthcare professional.
Learn about telogen effluvium from the British Association of Dermatologists.
What It Supports
- The appearance of fuller, denser-looking hair
- Focused care for thinning-prone or lower-density areas
- A hydrated, conditioned and balanced-feeling scalp
- A consistent targeted scalp-care routine
Inside STIM-Foll: ingredient roles and research
STIM-Foll brings together density-focused botanical complexes, advanced peptides and a complementary hydration system. Each ingredient has a distinct role in this daily leave-on ritual.
Redensyl®
Why it is included: A botanical-derived cosmetic active complex used in density-focused scalp care.
What research suggests: Supplier research reports improvements in hair-density measures in tested formulations. Its role in STIM-Foll is support for fuller-, denser-looking hair. Explore the source.
Evidence: Supplier ingredient research.
Procapil®
Why it is included: A complex combining biotinoyl tripeptide-1 with apigenin and oleanolic acid.
What research suggests: Supplier research explores the hair-root anchoring environment. It contributes to STIM-Foll’s peptide-and-botanical approach to stronger-looking hair. Explore the source.
Evidence: Supplier ingredient research.
Capixyl™
Why it is included: Acetyl tetrapeptide-3 paired with red clover extract.
What research suggests: Supplier research explores anchoring proteins and the scalp environment, supporting its use in products for fuller-looking hair. Explore the source.
Evidence: Supplier ingredient research.
AnaGain™
Why it is included: A pea-sprout extract used in density-focused scalp formulas.
What research suggests: A small supplier-authored study tested a 2% topical preparation in 10 volunteers for two weeks and measured changes in follicle-related gene expression. Those laboratory markers are distinct from a visible-density result. Supplier studies also explore longer-term hair-cycle measures. Explore the source.
Evidence: Small human mechanistic study and supplier research.
Adenosine
Why it is included: An ingredient studied in leave-on scalp lotions for hair-thickness and hair-cycle outcomes.
What research suggests: Research suggests topical adenosine may support hair-thickness outcomes: controlled studies of 0.75% lotions reported benefits in women and men with pattern thinning. These results apply to the studied lotions and regimens; STIM-Foll’s adenosine percentage has not been verified here. Explore the source.
Evidence: Controlled human studies of other formulations.
Caffeine
Why it is included: A cosmetic scalp active studied in leave-on preparations.
What research suggests: A six-month randomized, open-label study involving 210 men assessed a 0.2% caffeine liquid and reported an increased proportion of hairs in the growing phase. This supports the ingredient’s research story; it does not establish STIM-Foll’s equivalence to a medicine. Explore the source.
Evidence: Human study of another formulation.
AHK-Cu + GHK-Cu
Why it is included: Two distinct copper peptides in the formula’s peptide-support system.
What research suggests: Laboratory research on AHK-Cu found increased elongation of isolated human hair follicles and effects on cultured dermal papilla cells. This is promising early evidence, rather than a clinical scalp-regrowth result. AHK-Cu findings should not be attributed automatically to GHK-Cu. Explore the source.
Evidence: Laboratory and isolated-follicle research.
Niacinamide, panthenol, sodium hyaluronate, glycerin, beta-glucan + ectoin
Why it is included: A complementary hydration and scalp-comfort system.
What research suggests: Skin studies support moisture and barrier benefits for several of these ingredients. Panthenol has controlled human evidence for skin hydration and barrier support; ectoin and beta-glucan have skin-care evidence. These roles complement density-focused care by helping keep the scalp hydrated and comfortable. Explore the source.
Evidence: Skin hydration and barrier research; scalp application is a formulation rationale.
Black seed oil
Why it is included: Nigella sativa oil adds botanical emollient care.
What research suggests: A small 2013 pilot in 20 women studied a lotion containing 0.5% Nigella sativa essential oil and reported hair-density and thickness improvements. Essential oil is different from fixed seed oil, so that result cannot be transferred directly to STIM-Foll’s black seed oil. Explore the source.
Evidence: Small pilot using a different oil preparation.
Saw palmetto
Why it is included: A botanical extract used in scalp-care formulas.
What research suggests: A 16-week randomized, placebo-controlled study investigated a standardized saw palmetto oil in oral and topical groups and reported hair-density benefits. The topical preparation was a wash-off lotion; its extract specifications and use differ from STIM-Foll. This is ingredient research, not evidence that STIM-Foll blocks DHT. Explore the source.
Evidence: Human study of a specific standardized extract.
Biotin + additional peptides
Why it is included: Additional cosmetic ingredients within the broader formula.
What research suggests: A 2025 uncontrolled human study reported benefits with a specially encapsulated, water-soluble biotin serum. That delivery system is different from an ordinary biotin ingredient. Myristoyl pentapeptide-17 has evidence in multi-ingredient eyelash products; that does not isolate its effect on scalp hair. Oligopeptide-10 and oligopeptide-1 require exact supplier identity and formulation-specific support before assigning separate hair-density benefits. Explore the source.
Evidence: Emerging, formulation-specific evidence.
Understanding ingredient evidence
Studies cited here examine individual ingredients or other formulations. Results depend on concentration, delivery, use and study design. They do not establish clinical results for the finished STIM-Foll serum or prove that combining ingredients produces an additive effect.
Myristoyl pentapeptide-17, biotinoyl tripeptide-1, oligopeptide-10, oligopeptide-1 and biotin are also listed in the formula. Their presence alone does not establish a separate scalp-growth benefit; supplier identity, dose and formulation-specific evidence matter.
Your daily ritual
Apply a few drops to the scalp and massage, focusing on areas where thinning is most prominent. Leave in and style as usual. Use daily or 4–5 times weekly following the label. STIM-Foll and Vitality 11 are separate ritual steps.
How to Use
STIM-Foll application: Apply a few drops to the scalp and massage, focusing on areas where thinning is most prominent. Leave in and style as usual. Use daily or at least 4–5 times weekly, separately from Vitality 11.
Apply a few drops to the scalp and massage, concentrating on areas where thinning is most prominent. Leave in and style as usual.
Use once daily or at least 4–5 times weekly. Consistency matters when evaluating visible cosmetic changes over time.
Featured Ingredients
Purified Water, Glycerin, Propylene Glycol, Butylene Glycol, Niacinamide, Panthenol (Pro-Vitamin B5), Sodium Hyaluronate, Beta-Glucan, Ectoin, Disodium EDTA, Redensyl®, Procapil®, Capixyl™, AnaGain™, Myristoyl Pentapeptide-17, Biotinoyl Tripeptide-1, AHK-Cu (Copper Tripeptide-3), GHK-Cu (Copper Tripeptide-1), Oligopeptide-10, Oligopeptide-1, Adenosine, Biotin, Caffeine, Serenoa serrulata Fruit Extract (Saw Palmetto), Black Seed Oil, Polysorbate 20, Phenoxyethanol (and) Ethylhexylglycerin, Citric Acid, and Tocopheryl Acetate (Vitamin E).
This is a featured-ingredient summary, not the final packaging INCI declaration.
Pair It With Vitality 11
Vitality 11 Botanical Scalp Oil provides botanical oil-based nourishment as a flexible 30-minute to 2-hour pre-wash ritual, which is safe to leave on overnight, although overnight use is not recommended to reduce the risk of buildup, while STIM-Foll provides targeted leave-on peptide support. Use the formulas separately rather than mixing them.
For a streamlined two-product routine, shop the Targeted Density Duo.
One-time price: $40. Subscription pricing is separate and does not stack with storefront promotions.
Free U.S. shipping on orders over $60 after discounts
Shipping, Returns & Subscriptions
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U.S. shipping: Free standard shipping on orders over $60 after discounts. Orders are processed in 1–3 business days; standard delivery is typically 5–8 business days, with tracking sent by email.
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Final-sale policy: Sales are final except when an item arrives damaged or incorrect. Contact info@koriem.shop within 7 days of delivery with the order number and a photo.
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Subscribe & save: A 30-day delivery option is available at purchase. There is no minimum number of cycles, and cancellation is available before the next order processes.
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