Colouring Agent/Pigment

CI 14700

Reviewed by Kate · Last updated 14 Aug 2026

A synthetic red colourant used to add colour to skincare formulations

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What Is CI 14700?

CI 14700, also known as Lithol Rubine BK or Pigment Red 57, is a synthetic organic colorant approved for use in cosmetics. It belongs to the class of azo dyes and is used primarily to impart red or pink hues to skincare products, from serums to moisturisers.

As a cosmetic colorant, CI 14700 serves a purely aesthetic function—it does not interact with skin tissue or offer skincare benefits. Its role is limited to product appearance and brand differentiation on shelf and in packaging.

How It Works

CI 14700 is a synthetic dye molecule that remains largely on the surface of the skin or is rinsed away during cleansing. It does not penetrate the epidermis or participate in skin processes. The colorant is inert from a biochemical perspective—it colours the product formulation, not the skin itself.

Clinical Evidence & References

There is limited published research on CI 14700's dermatological effects because it is not designed to act on skin. The ingredient is included on approved cosmetic colorant lists in the UK and EU based on historical safety data and stability testing, rather than skincare efficacy studies. No specific clinical benefits to skin health have been documented.

How to Use

CI 14700 is included by manufacturers during formulation; end users do not need to adjust how they use a product containing it. If you have a known sensitivity to synthetic dyes, check the full ingredient list before purchase, though allergic reactions to approved cosmetic colorants remain uncommon.

Safety & Precautions

CI 14700 is approved for cosmetic use in the UK and EU and is generally well-tolerated. As with all synthetic dyes, those with sensitive skin or a history of reactions to colorants should conduct a patch test.

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