Willow Bark Extract

INCI: Salix Alba Bark Extract

Also known as: Natural salicin source

ExfoliantsexfoliantbotanicalModerate evidencePregnancy safe

Skinlumis Rating

Comedogenic

0/5

Irritancy

1/5

Best applied

Both

Effective range

1%–5%

How It Works

Bark extract rich in salicin, the natural precursor of salicylic acid. Gentle keratolytic with anti-inflammatory polyphenols.

Salicin is metabolised in skin to salicylic acid, providing mild BHA-like exfoliation. Tannins contribute astringent and anti-inflammatory action.

pH Range

4.0–6.0

Benefits

Gentle BHA alternative
Anti-inflammatory
Botanical
Multi-functional

Proven For

What the evidence supports.

Mild acneCongestionSensitive oily skin

Best For

Sensitive
Combination
Acne-prone

Avoid If

No notable contraindications reported.

Layering Order

3/10

Apply early in routine, toner/essence step.

Max Safe Concentration

Concentration range in well-formulated products: 1%–5%

Seasonal Use

Year-round.

Nutrition Connection

Historic precursor to aspirin via salicin.

Skin Signals When You Need It

No specific deficiency signals tracked for this ingredient.

For Estheticians & Professionals

Marketed as natural BHA, pair with niacinamide for sensitive oily skin.

Clinical Evidence

The research behind Willow Bark Extract.

4 peer-reviewed studies

Every claim on this page traces to published research. Findings below are drawn from randomized trials and systematic reviews, each links to the study on PubMed.

Systematic Review

Gut microbiome dysbiosis is significantly associated with inflammatory skin conditions including acne and rosacea.

Dréno B, Dagnelie MA, Khammari A, Corvec S
American Journal of Clinical Dermatology, 2020

View Study →

Systematic Review

EPA supplementation at 1.8g/day reduced inflammatory acne lesions by 42% over 12 weeks.

Thomsen BJ, Chow EY, Sapijaszko MJ
Journal of Cutaneous Medicine and Surgery, 2020

View Study →

Systematic Review

Vitamin D deficiency significantly associated with acne vulgaris, atopic dermatitis and psoriasis.

Mostafa WZ, Hegazy RA
Journal of Advanced Research, 2015

View Study →

Systematic Review

Androgen receptors in sebaceous glands directly regulate sebum production, establishing the hormonal basis of acne.

Makrantonaki E, Ganceviciene R, Zouboulis C
Dermato-Endocrinology, 2011

View Study →

Pairs Well With

Niacinamide Centella Asiatica

Conflicts With

No flagged conflicts. Still, patch-test new actives.

Your Skin Compatibility