L'Oréal Professionnel Dia Color Color Chart

Type
Ammonia-free alkaline demi-permanent
Mix ratio
1:1.5 with DIActivateur (1 tube to 3 oz)
Developer
DIActivateur 6 vol (1.8%), 9 vol (2.7%) or 15 vol (4.5%)
Processing time
20 minutes from the end of application
Gray coverage
Up to 70%

Source: manufacturer's chart, checked Oct 2026. Based on the brand's US chart, with Canada-only shades marked. Availability can vary by country.

View the official Dia Color chart

Dia Color is L'Oréal Professionnel's ammonia-free alkaline demi-permanent, used for tone-on-tone color, gray coverage up to 70% and soft lift. It mixes 1 to 1.5 with DIActivateur developer, one 2 oz tube to 3 oz. 6 vol gives a soft deposit, 9 vol a standard deposit and 15 vol a stronger deposit with up to 1.5 levels of lift. Process 20 minutes, timed from the end of application. Shades are grouped into tonal families and coded by level and tone, for example 9.13, which is also 9BG. A few shades, such as 4.20 and 6.60, carry the DM5 marking.

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