Jam PackedSerum

Glycerine

Well-established clinical evidence for improving skin hydration and barrier function, reducing TEWL, even at relatively low levels.

• The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluidPeer-reviewed clinical study (PMC)

  Randomised, assessor-blinded study of a combined formula (hyaluronic acid 1%, glycerin 5%, Centella extract); shows combined-formula results, not glycerin or Pulp alone.

• Effects of Locally Applied Glycerol and Xylitol on the Hydration, Barrier Function and Morphological Parameters of the SkinPeer-reviewed clinical study (Acta Dermato-Venereologica)

  Volunteer study of glycerol and xylitol applied to skin; ingredient-level evidence, not a test of Pulp products.

Squalane

Clinical and dermatological literature supports squalane as a biomimetic emollient that improves barrier function, softness, and reduces dryness without irritation.

• Daily use of a bakuchiol and squalane-containing face serum impacts skin estheticsClinical study (Cosmoderma)

  Study of a serum combining bakuchiol and squalane; combined-formula results, not squalane or Jam Packed alone.

Caprylic/Capric Triglyceride

Emollient with strong dermatological support for improving skin feel and reducing water loss

• Effect of an Emollient Emulsion Containing 15.0% of Caprylic/Capric Triglyceride on the Urocanic Acid of the Stratum CorneumPeer-reviewed study (Life, MDPI)

  Small volunteer and ex vivo study of a 15% caprylic/capric triglyceride emulsion on hydration and water loss; ingredient-level evidence, not a test of the serum.

Panthenol

Clinical studies show panthenol improves barrier function, hydration, and reduces irritation

• Performance and Tolerability of a New Topical Dexpanthenol-Containing Emollient Line in Subjects with Dry Skin: Results from Three Randomized StudiesRandomised clinical studies (Cosmetics, MDPI)

  Three 28-day studies of dexpanthenol emollients in dry skin, sponsored by the manufacturer; different formulas, not Jam Packed.

Sodium Hyaluronate

Strong hydration evidence

• Benefits of topical hyaluronic acid for skin quality and signs of skin aging: From literature review to clinical evidenceLiterature review with clinical evidence (PMC)

  Review of topical hyaluronic acid research; ingredient-level evidence, not a test of Pulp products.

• The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluidPeer-reviewed clinical study (PMC)

  Randomised, assessor-blinded study of a combined formula (hyaluronic acid 1%, glycerin 5%, Centella extract); shows combined-formula results, not glycerin or Pulp alone.

• Efficacy Evaluation of a Topical Hyaluronic Acid Serum in Facial PhotoagingClinical study (Dermatology and Therapy)

  6-week open-label study of a hyaluronic acid serum in 40 women; tests a different serum, not Jam Packed.

Ferments (Saccharomyces lysate + barley ferment)

Supports improved hydration, barrier signalling and microbiome-related benefits

• Barley Seed Ferment Filtrate Research: Evidence for Superior Hydration (Otoko)Related supplier research summary

  Same supplier page on barley seed ferment filtrate; related to, not a direct test of, this ferment blend.

Rosehip Oil

Clinical support for improving skin appearance, pigmentation, and elasticity, largely due to fatty acids and vitamin A derivatives.

• Evolution of Post-Surgical Scars Treated with Pure Rosehip Seed OilClinical trial (J. Cosmetics, Dermatological Sciences and Applications)

  Trial of pure rosehip seed oil on post-surgical scars; shows effects of neat oil on scars, not a test of the serum and not a scar claim for Pulp.

Grapeseed Extract

Contains proanthocyanidins with strong antioxidant activity; clinical evidence for photoprotection and skin quality improvement.

• Encapsulated Activated Grape Seed Extract: A Novel Formulation with Anti-Aging, Skin-Brightening, and Hydration PropertiesLab and clinical study (Cosmetics, MDPI)

  Lab work plus a 4-week, 31-person study of a 2% encapsulated proprietary grape seed extract; a specific supplier ingredient, not a test of the serum.

Haematococcus Pluvialis (Astaxanthin)

One of the strongest antioxidant actives with human studies showing improved skin elasticity, wrinkle depth and moisture retention.

• Cosmetic benefits of astaxanthin on human subjectsClinical studies (Acta Biochimica Polonica)

  Two studies combining oral astaxanthin supplements with (in one) topical use; mostly oral evidence, not a test of the serum.

Pentylene Glycol

Strong humectant with antimicrobial boosting effects in formulations; supports hydration and preservation systems.

Cranberry / Strawberry Seed Oils

Rich in omega fatty acids and antioxidants; evidence supports barrier and antioxidant support

Dermal Respiratory Factor (yeast + lactobacillus blend)

A 4-week efficacy study of Dermal Respiratory Factor demonstrated a 95% increase in moisture levels compared to an untreated control, and a 34% improvement over a base lotion alone. ACB Yogurt Dermal Respiratory Factor PF in a lotion was shown in an in-vivo study to reduce skin irritation/redness by 72% better than the placebo. In-vitro studies show the ingredient can increase cellular oxygen uptake by 115%, which aids in rejuvenating tired or aging skin.