L'OREAL NORGE AS
Olia Hårfarge 4.0 Dark Brown
Product Insights
Olia Hair Color 4.0 Dark Brown from L'Oreal is an at-home permanent hair dye that provides a deep natural brown shade. The formula is ammonia-free, includes an olive-oil infusion for added conditioning, and carries a gluten-free label which can reassure users with gluten sensitivities. However, like most permanent dyes it contains the common sensitizer p-phenylenediamine (PPD) and other chemical pigments, so a patch test is advisable for anyone prone to scalp irritation.
Comparative Analysis
Positioned as an ammonia-free, oil-infused permanent dye delivering a rich dark brown hue, Olia Hair Color 4.0 Dark Brown differentiates itself in the at-home color market by combining conditioning benefits with a gluten-free certification.
Ingredients
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Frequently Asked Questions
Everything you need to know about Olia Hårfarge 4.0 Dark Brown.
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