Question 1

What does Iron Oxides CI77499 do in a cosmetic formula?

Accepted Answer

This ingredient is a dark inorganic colorant used to give makeup, sunscreens, hair products, and soaps opacity and color depth. It is especially common where strong, stable pigmentation is needed, such as mascara, eyeliner, brow products, and complexion makeup.

Question 2

Is Iron Oxides CI77499 clean?

Accepted Answer

From a clean-beauty perspective, this ingredient is generally accepted and has low irritation or sensitization potential because it is insoluble and nonreactive on skin. The main quality-control issue is trace heavy-metal impurities, which are tightly limited by color-additive and cosmetic regulations.

Question 3

Is Iron Oxides CI77499 sustainable?

Accepted Answer

This material is mineral-derived or produced synthetically from abundant mineral feedstocks, so it is not a renewable plant-based input. It is inorganic and not biodegradable, but it is insoluble, inert, and not expected to bioaccumulate; the bigger sustainability notes are mining, energy use, and wastewater controls during pigment manufacture.

Question 4

Is Iron Oxides CI77499 COSMOS-approved?

Accepted Answer

It is permitted under COSMOS-natural and COSMOS-organic as an approved mineral colorant when purity and contaminant limits are met. Its Green Chemistry profile is mixed: stable, low-reactivity, and solvent-free in use, but based on nonrenewable mineral inputs and not designed for biodegradation.

Question 5

How does Iron Oxides CI77499 work chemically?

Accepted Answer

This material is an insoluble inorganic pigment made of crystalline mineral particles rather than a discrete organic molecule, which gives strong opacity, light stability, and heat stability. Use level is shade-dependent, often below 1% for tint adjustment and several percent or more in color cosmetics, and it requires good dispersion with wetting agents, oils, esters, waxes, or surface treatments to prevent speckling and settling.