DIA Light

DIA | 1.7 fl. oz.

  • 48 shades available

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Gentle Acid Technology Demi-Permanent


DIA Light is a luminous demi-permanent gel-crème hair color formulated with gentle acid technology ideal for color-treated or sensitized hair. Once mixed, its creamy consistency allows for complete placement control. Once applied, the color gently penetrates the hair fiber while the cationic polymers provide a resurfacing effect to the cuticle, creating shiny, beautiful results.

Whether you have highlighted clients, single processed clients, or clients getting a blow out, don’t let them go without a gloss! DIA Light provides incredible shine and care that lasts up to 6 weeks- just in time for their next hair appointment. Your client will leave the salon feeling more fabulous than ever and will hope for the same great service the next time they pay you a visit.

To get your client on board, explain to them the difference between a glossed finish and a non-glossed finish. Would your client ever go to the nail salon without receiving a top coat? Feel empowered to educate your client so they understand WHY a gloss is beneficial for them in the long run.

The DIA Light portfolio offers a wide variety of 53 shades for ultimate creativity and is perfectly colormatched to any L'Oréal Professionnel permanent haircolor.

Download the DIA Color Chart
Download the DIA Colormatching Guidelines
Download the L'Oréal Professionnel Color Theory Chart


Zero Lift


  • 2-20 minutes


  • Color-Treated
  • Sensitized


  • Luminous tones
  • High shine
  • Intense care


  • 1:1.5 Color to Developer Mixing Ratio
  • 6-9-volume DIActivateur Developer

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Ask Questions about this Product

Can I use Richesse on virgin hair without bleaching first?? using 9 vol

Asked by: Sam89
Hi ! Thanks for your question. Richesse is a demi permanent, no ammonia, no lift, deposit only haircolor. It can be used on natural, color-treated, or bleached hair. Thanks for your interest in L'Oréal Professionnel!
Answered by: Loreal Professionnel
Date published: 2021-06-01

Is the Dia line PPD free?

Asked by: mknight
Hi! DIA Light does contain PPD. If a product is PPD free, it will call it out on the packaging. Thank you
Answered by: Loreal Professionnel
Date published: 2021-06-01

Can I use dia light or dia richesse to cover few grey hairs. After how long I need to do grey root touch up. And when to reapply on whole hair

Asked by: Kk12
DiaRichesse will blend up to 70% gray while DiaLight will blend up to 30% gray. You can touch up the new growth every 4-6 weeks and refresh the ends the last 5-10 minutes.
Answered by: Loreal Professionnel
Date published: 2020-12-18

Can I use it, if I have unbleached brown hair?

Asked by: Zizi
DiaLight can be used to tone and refresh the mid-shaft and ends after a color service or give hair a vinyl shine. On natural/virgin you will not see a change in your hair color.
Answered by: Loreal Professionnel
Date published: 2020-12-03

What volume developer is recommended to be used on sensitised bleached hair with Dialight?

Asked by: Kennybabes 40
Thank you for your question. You have reached the US site. Please contact LL'Oreal Professionnel in your country for information on products sold there.
Answered by: Loreal Professionnel
Date published: 2020-08-31
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