Pantothenic acid
Pantothenic acid’s role in skin biology is inseparable from its role in Coenzyme A (CoA) synthesis. CoA is the metabolic hub through which fatty acids, ceramides, and sphingolipids are synthesised – the lipid components that constitute the stratum corneum’s waterproof seal and regulate transepidermal water loss (TEWL). Pantothenic acid deficiency measurably impairs keratinocyte proliferation and differentiation, reduces fibroblast production of keratinocyte growth factor (KGF) and procollagen 4a2, and compromises the ceramide biosynthesis that barrier function depends on. [5] In aesthetics practice, the clinically relevant form is not pantothenic acid itself but its alcohol derivative – panthenol (D-panthenol, also called dexpanthenol or pro-vitamin B5) – which penetrates the stratum corneum more readily, is converted to pantothenic acid in the viable epidermis, and activates the full downstream CoA-mediated mechanism from inside the tissue. The clinical evidence for topical panthenol covers wound healing acceleration, barrier restoration after chemical or physical disruption, reduction of post-procedure erythema and TEWL, and fibroblast proliferation stimulation – a combination that makes it one of the most consistently useful post-procedure topical agents in the portfolio.
Pantothenic acid is found in virtually all food groups – its name derives from the Greek pantothen (from everywhere) – making frank dietary deficiency rare. In skin biology, however, the relevant question is not simply whether pantothenic acid is present but whether it is available in sufficient quantity at the tissue level to sustain CoA-dependent lipid synthesis at the rate the barrier requires, and whether topical delivery of its pro-vitamin form can meaningfully supplement that availability.
The Pantothenic Acid / Panthenol Distinction
The relationship between pantothenic acid, panthenol, and dexpanthenol is a source of common labelling confusion that we must resolve clearly:
Pantothenic acid (Vitamin B5) is the biologically active vitamin form – the molecule that cells phosphorylate and incorporate into CoA. It is the oral supplementation form and the nutritional designation.
Panthenol (pro-vitamin B5) is the alcohol analogue of pantothenic acid – chemically stable, hygroscopic, and more lipid-compatible than pantothenic acid itself, which makes it significantly better suited to topical formulation. On skin contact, panthenol is oxidised by skin oxidases to pantothenic acid in the viable epidermis.
Dexpanthenol (D-panthenol) is the biologically active enantiomer of panthenol – only the D-form is converted to pantothenic acid; racemic DL-panthenol contains equal D- and L-forms, meaning only half the total panthenol content contributes to the biological mechanism. Products specifying D-panthenol or dexpanthenol deliver twice the active dose per gram compared to DL-panthenol at equivalent label percentage. This distinction is clinically meaningful at higher concentrations (5%+) and is worth understanding when evaluating post-procedure topical formulations.
In INCI ingredient lists: Panthenol covers both D- and DL-forms; Dexpanthenol specifies the active D-enantiomer only. In clinical literature and pharmaceutical formulations, ‘panthenol’ and ‘dexpanthenol’ are used interchangeably to mean the D-form. In INCI ingredient declarations, however, ‘Panthenol’ covers both D- and DL-forms; only ‘Dexpanthenol’ specifies the pure D-enantiomer.
The CoA Pathway: Why B5 Matters for Skin
Coenzyme A is not produced by the skin independently – every molecule of CoA in the epidermis and dermis requires pantothenic acid as its obligate biosynthetic precursor. The pathway: pantothenic acid is phosphorylated by pantothenate kinase to 4′-phosphopantothenate, then converted through four further enzymatic steps to CoA, with ATP providing the adenosyl group at the final step. [8]
CoA then functions as the universal acyl group carrier for fatty acid synthesis – ceramide precursors, free fatty acids, and sphingolipids are all assembled through CoA-dependent reactions in differentiating keratinocytes before being packaged into lamellar granules for secretion into the stratum corneum intercellular spaces. [4] This means that pantothenic acid availability is a direct upstream determinant of barrier lipid synthesis rate – not a peripheral nutritional consideration but a rate-limiting cofactor in the ceramide and fatty acid assembly process that the Ceramide and Skin Barrier entities describe as the “mortar” of the stratum corneum.
Pantothenic acid deficiency studies in keratinocyte and fibroblast models confirm the clinical consequences: depleted pantothenic acid significantly reduces keratinocyte proliferation and differentiation, reduces fibroblast synthesis of KGF and procollagen 4a2, and compromises the barrier lipid synthesis pathway downstream. [5] The corollary – that restoring pantothenic acid availability, particularly in compromised or post-procedure skin where lipid synthesis demand is elevated, improves the rate and quality of barrier repair – is the mechanistic foundation for dexpanthenol’s wound healing evidence.
Wound Healing: The Dexpanthenol Evidence
The most clinically significant evidence base for Vitamin B5 in aesthetics is the post-procedure wound healing literature for topical dexpanthenol. A 2020 review systematically assessed clinical and gene expression evidence for dexpanthenol across superficial wound types relevant to cosmetic and medical interventions – including ablative laser treatment, tattooing, dermabrasion, and skin barrier disruption models. [3] Key findings:
- Dexpanthenol upregulates genes critical for the healing process – specifically wound healing cascade genes involved in re-epithelialisation and barrier restoration
- Prospective clinical studies confirmed accelerated re-epithelialisation and faster restoration of skin barrier function following skin injury with topical dexpanthenol vs. untreated controls
- In a tattooing-model RCT (n=54), tattooing induced a 7-fold increase in mean TEWL (significant barrier dysfunction); 5% dexpanthenol water-in-oil application produced virtually complete restoration of barrier function by day 14 – one week earlier than previously reported recovery timelines for untreated chemically disrupted skin [3]
The 2025 post-laser panthenol mask RCT adds the most directly applicable data point for the Creative Touch portfolio: a panthenol-enriched mask applied after non-ablative laser treatment significantly improved postoperative skin hydration, enhanced barrier function recovery, and reduced erythema and melanin index at days 3, 7, and 14 compared to controls – with the melanin index reduction at day 14 being of particular clinical relevance for reducing post-procedure dyspigmentation risk. [2]
The mechanism behind dexpanthenol’s wound healing acceleration operates through four converging pathways:
- Fibroblast proliferation stimulation – panthenol directly promotes fibroblast division and migration into the wound bed, increasing the cell population available for collagen synthesis and wound contraction
- Re-epithelialisation acceleration – keratinocyte proliferation and migration from wound margins is enhanced, shortening the re-epithelialisation phase
- Anti-inflammatory modulation – reduction of pro-inflammatory cytokines at the wound site, including IL-1α and IL-6 – reducing the inflammatory burden that impedes organised healing
- Barrier lipid synthesis support – CoA-mediated ceramide and fatty acid production is sustained at elevated demand during barrier repair, providing the lipid substrate for lamellar body secretion and SC reassembly [3]
Humectant and Moisturisation Effects
Panthenol is a polyol humectant – its multiple hydroxyl groups bind water molecules in the stratum corneum, increasing SC hydration through the same mechanism as glycerol and propylene glycol. [7] A two-part RCT (Tanfonline, 2017) assessed a panthenol-containing emollient in healthy subjects using both a moisturisation model and an SDS-induced barrier disruption model. Results confirmed: significantly improved skin hydration vs. comparator in the moisturisation arm; significantly more rapid and pronounced TEWL reduction in the SDS-disruption recovery arm compared to untreated contralateral skin, reaching statistical significance over a three-week treatment period. [6]
The humectant effect and the barrier repair effect are complementary rather than the same mechanism: humectancy increases SC water content acutely through hygroscopic binding; barrier repair restores the lipid matrix that sustains water retention long-term by reducing TEWL. Panthenol delivers both simultaneously – which is what distinguishes it from purely humectant agents (glycerol, hyaluronic acid) that improve hydration without addressing the underlying barrier lipid deficit.
Acne: The Sebum Lipid Hypothesis
The rationale for pantothenic acid in acne management rests on the CoA-fatty acid metabolism pathway. Sebum is produced through CoA-dependent lipid synthesis in sebocytes – the same pathway that produces barrier ceramides. The hypothesis is that when CoA is limiting in sebocyte-rich skin (face, chest, back), available CoA is preferentially directed toward sebum production rather than barrier lipid synthesis; supplementing pantothenic acid increases CoA availability, allowing adequate supply to both pathways and normalising sebum lipid composition. [8]
The pivotal clinical test of this hypothesis was a 12-week double-blind, placebo-controlled RCT (PMC4065280, PMID 24831048) of an oral pantothenic acid-based dietary supplement in healthy adults with facial acne. Results: significant reduction in total facial lesion count versus placebo at 12 weeks; significant reduction in area-specific and inflammatory blemishes in secondary analysis. [8] The limitations are important: single trial, novel proprietary formulation, and the dose used was substantially higher than standard dietary intake, raising the question of whether the effect is achievable at physiological supplementation levels. The evidence tier is Tier 2 – a single published RCT warranting further independent trials rather than definitive clinical adoption.
Clinical Application
Pantothenic acid in its topical dexpanthenol form is one of the most directly applicable skincare actives – specifically because our energy-based treatments (thulium FTL, RF microneedling) and physical interventions ( microneedling, chemical peels) all create controlled superficial skin injury that the dexpanthenol wound healing evidence directly addresses.
Post-procedure recovery
Topical dexpanthenol (5% in water-in-oil emollient) applied within hours of fractional laser, RF microneedling, or skin peel treatment is supported by the strongest evidence base of any post-procedure topical category outside prescription emollients. The 2025 post-laser RCT, the 2020 systematic review, and the tattooing barrier disruption RCT collectively confirm: faster re-epithelialisation, earlier barrier function restoration, reduced erythema, and reduced post-procedure melanin index elevation – the last point being particularly significant for FST III–VI clients where post-inflammatory hyperpigmentation risk is the primary post-procedure concern. [2]
Concentration matters: the documented TEWL-reduction benefit requires at least 1% panthenol – formulations listing panthenol below this level are unlikely to deliver independent barrier repair benefit regardless of other claims.
Practical recommendation: a 5% dexpanthenol formulation applied to treated skin from day one post-procedure, twice daily, through the MEND extrusion and re-epithelialisation phase (typically days one to seven for moderate FTL or MNRF treatment) – before transitioning to standard barrier maintenance. It does not require a delivery window (unlike LADD actives) and can be applied at any point after treatment without timing sensitivity.
Barrier-compromised skin preparation
For clients presenting with compromised barrier function prior to in-clinic treatment, panthenol in the preparatory skincare phase supports barrier lipid synthesis through CoA provision – complementary to the topical ceramide restoration route (which directly restores the barrier lipid component) and the PDRN route (which reduces the inflammatory burden on barrier function). The three approaches operate on the same barrier deficit through different mechanisms and are genuinely additive in clients with significantly impaired function.
The most robust evidence for dexpanthenol’s anti-inflammatory clinical utility comes from atopic dermatitis: a 2022 consensus review confirmed that dexpanthenol improves barrier function, reduces acute flare frequency, and has a documented topical corticosteroid-sparing effect in mild-to-moderate AD – positioning it as a maintenance treatment rather than a cosmeceutical adjunct in inflammatory skin presentations. [1]
Acne-prone skin
For clients with acne as a primary concern, oral B5 supplementation at clinical doses is a low-risk adjunct with emerging evidence – positioned alongside (not instead of) primary acne interventions. The barrier repair dimension of topical panthenol is additionally relevant here: acne treatments (benzoyl peroxide, retinoids, salicylic acid) consistently compromise barrier function, and panthenol’s concurrent barrier restoration and anti-inflammatory effects make it one of the most consistently compatible co-actives alongside aggressive acne topicals.
Combination compatibility
Panthenol’s pH range is broad (stable across pH 4–8) and it has no known interactions with the active ingredient categories commonly used alongside it – retinoids, AHAs, vitamin C, peptides, and niacinamide are all compatible. It does not compete for receptor pathways with any of these actives, making it one of the most formulation-flexible skincare ingredients available.
References
Cho YS, Kim HO, Woo SM, et al. (2022). Use of Dexpanthenol for Atopic Dermatitis-Benefits and Recommendations Based on Current Evidence. J Clin Med, 11(14) . doi.org/10.3390/jcm11143943
Gao M, Gao N, Wang L, et al. (2025). Evaluation of the Efficacy and Safety of a Panthenol-Enriched Mask for Skin Barrier Recovery After Facial Laser Treatment: Results of a Double-Blind Randomized Controlled Study. J Cosmet Dermatol, 24(7), e70223 . doi.org/10.1111/jocd.70223
Gorski J, Proksch E, Baron JM, et al. (2020). Dexpanthenol in Wound Healing after Medical and Cosmetic Interventions (Postprocedure Wound Healing). Pharmaceuticals (Basel), 13(7) . doi.org/10.3390/ph13070138
Kim HB, Kim G, Park E, et al. (2025). Functional Expansion of the Skin Microbiome: A Pantothenate-Producing Rothia Strain Confers Anti-Inflammatory and Photoaging-Protective Effects. Int J Mol Sci, 26(24) . doi.org/10.3390/ijms262412058
Kobayashi D, Kusama M, Onda M, et al. (2011). The effect of pantothenic acid deficiency on keratinocyte proliferation and the synthesis of keratinocyte growth factor and collagen in fibroblasts. J Pharmacol Sci, 115(2), 230-4 . doi.org/10.1254/jphs.10224sc
Stettler H, Kurka P, Lunau N, et al. (2017). A new topical panthenol-containing emollient: Results from two randomized controlled studies assessing its skin moisturization and barrier restoration potential, and the effect on skin microflora. J Dermatolog Treat, 28(2), 173-180 . doi.org/10.1080/09546634.2016.1214235
Torres A, Rego L, Martins MS, et al. (2023). How to Promote Skin Repair? In-Depth Look at Pharmaceutical and Cosmetic Strategies. Pharmaceuticals (Basel), 16(4) . doi.org/10.3390/ph16040573
Yang M, Moclair B, Hatcher V, et al. (2014). A randomized, double-blind, placebo-controlled study of a novel pantothenic Acid-based dietary supplement in subjects with mild to moderate facial acne. Dermatol Ther (Heidelb), 4(1), 93-101 . doi.org/10.1007/s13555-014-0052-3
Molecular Structure
- Formula
- C₉H₁₇NO₅
- Weight
- 219.23 g/mol
- IUPAC
- 3-[(2,4-dihydroxy-3,3-dimethylbutanoyl)amino]propanoic acid
Computational Identifiers
| InChI | InChI=1S/C9H17NO5/c1-9(2,5-11)7(14)8(15)10-4-3-6(12)13/h7,11,14H,3-5H2,1-2H3,(H,10,15)(H,12,13) | |
|---|---|---|
| InChIKey | GHOKWGTUZJEAQD-UHFFFAOYSA-N | |
| Canonical SMILES | CC(C)(CO)C(C(=O)NCCC(=O)O)O | |
Data sourced from: PubChem (NCBI) ↗ | ||
Also Known As
- Vitamin B5
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