Ci
CI 26100 (Red 17 / Solvent Red 23)
CI 26100 · Red 17
An oil-soluble synthetic red diazo dye used as a color additive — present to color the formula, no skin effect.
What it does
CI 26100 is the colorant code for Solvent Red 23, a synthetic diazo dye approved by the FDA as D&C Red No. 17. Unlike the water-soluble FD&C dyes it is oil-soluble, so it is used to color the oil phase of creams, oils, and color cosmetics. Its role in the formula is visual color only — there is no documented skin-care effect.
Also known as
red 17, d&c red no. 17, solvent red 23, sudan iii
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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