Rheum Palmatum Root/Stalk Extract

INCI: RHEUM PALMATUM ROOT/STALK EXTRACT

CAS Number
90106-27-7 / 8016-55-5
Function
Astringent, Skin Conditioning, Tonic
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Not specifically restricted; permitted under general cosmetic ingredient provisions

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Variable anthraquinone content depending on batch root:stalk ratio โ€” requires standardization; stalk material dilutes root anthraquinone load; dual CAS numbers reflect mixed botanical source

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Concern Level: Low

Regulatory Flags

plant-extract natural-origin

Frequently Asked Questions

Is Rheum Palmatum Root/Stalk Extract safe in cosmetics?

Variable anthraquinone content depending on batch root:stalk ratio โ€” requires standardization; stalk material dilutes root anthraquinone load; dual CAS numbers reflect mixed botanical source The EU classifies Rheum Palmatum Root/Stalk Extract as "permitted". Safety rating: GOOD.

Is Rheum Palmatum Root/Stalk Extract allowed in the EU?

Rheum Palmatum Root/Stalk Extract EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Rheum Palmatum Root/Stalk Extract do in cosmetics?

Rheum Palmatum Root/Stalk Extract functions as: Astringent, Skin Conditioning, Tonic. It is classified as a cosmetic ingredient in our database. CAS number: 90106-27-7 / 8016-55-5.

What is the Margin of Safety for Rheum Palmatum Root/Stalk Extract?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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