IGORA ZERO AMM is a professional-only product for licensed colorists to use in a salon setting — it's a color creme that must be measured and mixed with a separately sold developer at specific ratios, not a boxed, pre-mixed at-home color kit. It suits clients who want full gray coverage or a permanent color change but are sensitive to the smell or scalp sting of ammonia-based dyes, since this line is built specifically to be ammonia-free.

It also suits colorists who want a highlift option: the 10-series shades, mixed at a different ratio and with 30-volume developer, can lift hair up to three levels while still depositing tone.

What differentiates IGORA ZERO AMM from a standard permanent color is the ammonia-free chemistry paired with full oxidative performance — most ammonia-free lines trade away gray coverage or lift capability to get a gentler odor profile, while this one is built to still deliver up to 100% white coverage and, on the highlift shades, up to three levels of lift. That combination is the reason a colorist would reach for it over either a traditional ammonia permanent or a gentler demi-permanent gloss.

Application is a professional in-salon process, not an at-home treatment.

The color creme is mixed with IGORA ROYAL Oil Developer — 1:1 for standard shades, 1:2 for 10-series highlift shades — choosing 3% (10 volume) for toning or darker results, 6% (20 volume) for standard lift and gray coverage, or 9% (30 volume) for up to 3 levels of lift. The mixture is applied evenly to dry, unwashed hair in sections, targeting gray or regrowth areas first, and left to process for 30 to 45 minutes with no external heat. It's then emulsified with a small amount of water, rinsed thoroughly, and followed with a color-safe professional shampoo.

Pros

• Ammonia-free formulation avoids the strong odor and scalp stinging associated with traditional ammonia permanent dyes, which matters for sensitive-scalp clients and salon air quality alike
• Up to 100% white/gray coverage with the same oxidative reliability as a traditional permanent color, rather than the softer coverage typical of demi-permanent glosses
• The 10-series highlift shades can lift up to 3 levels while still toning, useful for going noticeably lighter without a separate lightening step
• Grape seed and apricot kernel oils built into the base (Phytolipid Technology) are positioned to help protect hair condition during processing

Cons

• Requires professional mixing with a separately purchased IGORA ROYAL Oil Developer at a precise ratio — it is not usable straight from the tube and is not designed for at-home DIY application
• Standard-shade lift is modest; the 3-level lift capability is specific to the 10-series highlift shades, not the full shade range
• Must not be mixed with Essensity developers, since the combination's higher oil content can produce overly intense, unpredictable results — colorists switching from Essensity also need to switch developer lines
• 30 to 45 minute processing time with no external heat allowed, so it takes real chair time compared with a quick-processing gloss