Caesalpinia Spinosa Gum

Caesalpinia Spinosa Gum (tara gum) is a polysaccharide thickener/film-former used at low concentrations (typically ~0.1–1%) to stabilize and texture products, and it is generally non-reactive on skin. Clinical experience and patch-test data for similar botanical gums suggest a low but non-zero risk of irritation or contact allergy from plant-derived impurities/proteins, especially in eczema-prone or highly reactive patients. Because it is not an active and is usually used at low levels, I rate it very gentle but not fully inert. Safety Notes: Caesalpinia Spinosa Gum (tara gum) is used as a rheology modifier/film former; in commercial leave-on lotions, serums, and masks it commonly appears at low structuring levels around 0.05–0.3% (often in combination with other gums/thickeners). Higher-strength consumer products such as thick gel masks, peel-off style masks, and some “natural” high-viscosity creams can use roughly 1–3% to build body and film, with ~3% representing the upper end observed before texture (stringiness/tack) and processing constraints typically become limiting; rinse-off products tend to sit in the same or slightly higher band when a very viscous texture is desired.