Potentilla Erecta Root Extract

Potentilla erecta (tormentil) root extract is primarily an astringent/soothing botanical rich in tannins and polyphenols, typically used at low percentages in leave-on products. While not a classic high-risk allergen like fragrance oils, tannin-heavy astringent botanicals can sting on compromised barriers (eczema, post-procedure) and have documented potential for irritant reactions and occasional contact sensitivity in patch testing. Given sensitive-skin populations and routine layering, I score it as mild due to plausible stinging/dryness and low-but-real sensitization risk. Safety Notes: In commercial skincare, Potentilla erecta (tormentil) root extract is commonly used as an astringent/soothing botanical, with many leave-on and rinse-off products including it at very low label-levels (often part of multi-extract blends) around 0.001–0.1%. More “active botanical” formulas (toners/serums/spot products and some masks) use higher levels, most often ~0.5–2%, and a small number of consumer-available, high-botanical or tannin-focused products reach about 3–5% depending on extract type/solids and tolerability. No specific FDA/EU maximum applies to this INCI, so the upper end is typically constrained by sensory astringency, color/odor, and stability/compatibility rather than regulation.