Castanea Crenata (Chestnut) Shell Extract
Also known as: Korean Chestnut Shell Extract, Chestnut Shell Extract
Castanea crenata shell extract is derived from the outer shell of the Korean chestnut and is dense in tannins and polyphenolic antioxidants. In cosmetics, it functions primarily as an astringent that helps reduce the appearance of enlarged pores and regulate surface sebum. While beneficial for shiny or combination skin, its natural astringency may feel slightly drying on very dry skin types.
Plant extract / astringentVegan
BenefitModerate 2.2 / 4
Oil control i2.2 / 4
Whether it can reduce excess sebum, shine, or greasiness — absorbents, sebum-regulating ingredients, and some acne actives.
Texture i1.8 / 4
Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.
Anti aging i1.5 / 4
Whether it can help visible signs of aging — fine lines, wrinkles, loss of firmness, or photoaging.
RiskLow 0.9 / 4
Irritation i0.8 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Sensitization i0.6 / 4
Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
- Refines pore appearance
- Helps balance excess oil
- Delivers antioxidant defense
Things to watch
- Potential mild skin dryness
- Low risk of botanical sensitization
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Products with Castanea Crenata (Chestnut) Shell Extract
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Frequently asked questions
- What does chestnut shell extract do in skincare?
- It provides natural tannins that act as astringents, helping to visibly minimize pores and regulate excess sebum.
- Is chestnut shell extract safe for everyday use?
- Yes, it is generally safe for daily use, especially in balancing formulations for oily and combination skin types.
