Is this product safe for sensitive or dry scalp and hair?

The formula contains strong alkaline agents (ammonium hydroxide, hydrogen peroxide) and several fragrance allergens, so it can cause irritation on sensitive or already dry scalps; while the added oils and vitamins help moisturize, a patch test is recommended before full application.

What role does hydrogen peroxide play in the Nutrisse 100 Extra Lys Blond formula?

Hydrogen peroxide acts as the primary oxidizing agent that lifts the natural pigment of the hair, opens the cuticle and allows the color molecules to penetrate, enabling the lightening effect; it also contributes to the overall bleaching strength but can increase dryness if not properly conditioned.

How often should the product be applied and does it contain any controversial chemicals?

The treatment is intended for occasional use, typically applied once every few weeks or as directed by a professional for full hair bleaching; it does contain controversial ingredients such as ammonium hydroxide, p-aminophenol, 2,4-diaminophenoxyethanol, synthetic fragrances, and colorants (CI 15985, CI 19140) that may be irritants or allergens, so careful handling and proper rinsing are essential.

L'OREAL NORGE AS

Nutrisse 100 Extra Lys Blond

Beauty

Product Insights

Nutrisse 100 Extra Lys Blond is a professional hair-coloring and lightening treatment from L'Oreal that combines conditioning agents such as cetearyl alcohol, shea butter, and a blend of natural oils (sunflower, grape seed, olive, avocado) with antioxidant vitamins C and E and rosemary extract to help protect hair during bleaching. The formulation also relies on strong alkaline and oxidative components - hydrogen peroxide, ammonium hydroxide, p-aminophenol and 2,4-diaminophenoxyethanol - together with synthetic surfactants (laureth-12, deceth-3, oleth-30) and a spectrum of fragrance ingredients (linalool, butylphenyl methylpropional, benzyl alcohol) that can irritate sensitive scalps. While the product is labeled gluten-free, it includes potential allergens such as titanium dioxide, colorants CI 15985 and CI 19140, sodium metabisulfite and various fragrance compounds, so a patch test is advisable before full use.

Comparative Analysis

Positioned as a high-performance blonde lightening treatment, this L'Oreal Nutrisse 100 Extra Lys Blond differentiates itself from standard shampoos by coupling potent bleaching agents with a rich blend of conditioning oils and antioxidant vitamins for added hair protection.

Ingredients

1206235AQUA / WATER , CETEARYL ALCOHOL , PROPYLENE GLYCOL , DECETH-3 , LAURETH-12 , AMMONIUM HYDROXIDE , OLETH-30 , LAURIC ACID , HEXADIMETHRINE CHLORIDE , GLYCOLDISTEARATE , POLYQUATERNIUM-22 , ETHANOLAMINE , SILICA DIMETHYL SILYLATE [NANO] /SILICA DIMETHYL SILYLATE , CI 77891 / TITANIUM DIOXIDE ,2,4-DIAMINOPHENOXYETHANOL HCl , p-AMINOPHENOL , ASCORBIC ACID , TOCOPHEROL , SODIUM METABISULFITE , THIOGLYCERIN, TOLUENE-2,5-DIAMINE , HELIANTHUS ANNUUS SEED OIL / SUNFLOWER SEED OIL , DIMETHICONE, CARBOMER , RESORCINOL , ROSMARINUS OFFICINALIS (ROSEMARY) EXTRACT , EDTA , VITISVINIFERA SEED OIL / GRAPE SEED OIL , PARFUM / FRAGRANCE (F.I.L. C203669/1).1187092AQUA / WATER , HYDROGEN PEROXIDE , CETEARYL ALCOHOL , SODIUM SALICYLATE , TRIDECETH-2 CARBOXAMIDE MEA , PHOSPHORIC ACID , CETEARETH-25 , TETRASODIUMETIDRONATE , TETRASODIUM PYROPHOSPHATE , GLYCERIN (F.I.L. C202310/1).1149755 AAQUA / WATER , CETEARYL ALCOHOL , PARAFFINUM LIQUIDUM / MINERAL OIL , BEHENTRIMONIUM CHLORIDE , BUTYROSPERMUM PARKII BUTTER / SHEABUTTER , OLEA EUROPAEA OIL / OLIVE FRUIT OIL , VACCINIUM MACROCARPON(CRANBERRY) SEED OIL , GLYCERIN , GLYCINE SOJA OIL / SOYBEAN OIL , RIBESNIGRUM SEED OIL / BLACK CURRANT SEED OIL , ISOPROPYL ALCOHOL , CITRICACID , PERSEA GRATISSIMA OIL / AVOCADO OIL , BHT , TOCOPHEROL , CHLORHEXIDINE DIGLUCONATE , CI 15985 / YELLOW 6 , CI 19140 / YELLOW 5, LINALOOL , BUTYLPHENYL METHYLPROPIONAL , BENZYL ALCOHOL , PARFUM , FRAGRANCE.(F.I.L. C207740/1).

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