Locked Nucleic Acid-1

INCI: LOCKED NUCLEIC ACID-1

CAS Number
206055-71-2 [^1_5]
Function
Not established for cosmetic use (LNA-type nucleoside derivative; primarily pharmaceutical/research)
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Permitted โ€” not specifically restricted under 21 CFR; falls under general cosmetic ingredient safety burden on manufacturer

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Synthetic modified nucleoside with no CIR review or SCCS opinion; full toxicological dossier required including acute, repeat-dose, genotoxicity, sensitization, and irritation studies; cosmetic relevance unproven.

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Concern Level: High

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Locked Nucleic Acid-1 safe in cosmetics?

Synthetic modified nucleoside with no CIR review or SCCS opinion; full toxicological dossier required including acute, repeat-dose, genotoxicity, sensitization, and irritation studies; cosmetic relevance unproven. The EU classifies Locked Nucleic Acid-1 as "permitted". Safety rating: POOR.

Is Locked Nucleic Acid-1 allowed in the EU?

Locked Nucleic Acid-1 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Locked Nucleic Acid-1 do in cosmetics?

Locked Nucleic Acid-1 functions as: Not established for cosmetic use (LNA-type nucleoside derivative; primarily pharmaceutical/research). It is classified as a cosmetic ingredient in our database. CAS number: 206055-71-2 [^1_5].

What is the Margin of Safety for Locked Nucleic Acid-1?

not established 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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