Olaplex
No4 CurlHydrating Curl Shampoo250 ml
Sulfate-free
from€26.60
€10.64 / 100 ml
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Blonde Enhancer Toning Shampoo No.4P
Hair product · no skin rating
- No drying alcohol
- Silicone-free
Buy from a trusted store
- LY
Lyko
Out of stock
Out of stock€84.15€58.91€5.89 / 100 ml
Prices come from Finnish online stores and are shown in euros. Cocopanda delivers only within mainland Finland; Lyko's delivery terms also list Sweden, Norway, Denmark, Poland, the Netherlands, Austria, and Germany. Neither delivers to the US or the UK.
Olaplex Blonde Enhancer Toning Shampoo No.4P is a shampoo (1,000 ml). The ingredient list has 18 ingredients. The product is silicone-free and sulfate-free. The product contains no drying alcohol. One retailer carries it right now, at €58.91.
- Product type
- Shampoo
- Size
- 1000 ml
- Origin
- Western
Source: store product page · Updated 2026-08-26
Ingredient analysis
Contains one flagged ingredient group. This reading covers ingredient groups, not suitability for hair or scalp.
Flagged ingredient groups
- Fragrance3 ingredients
The product contains fragrance or declared fragrance allergens.
- Fragrance (Parfum)#10
- Hexyl Cinnamal#15
- Limonene#16
This is a hair product. We read the same ingredient groups as on a skincare product — fragrance, sulfates, silicones and drying alcohols — but we publish no acne-prone rating and no judgment about whose hair or scalp it suits. An ingredient list cannot tell you that.
Confidence: medium · v2026.09.3
This assessment is read from the ingredient list and is not medical advice. It makes no promise about acne. Individual skin reactions vary.
Read how we classify productsDryingness index
23/ 100Mildly drying
The most drying ingredients
- Sodium C14-16 Olefin Sulfonate(position 2)
- Sodium Chloride(position 6)
Ingredients that lower the score
- Cocamidopropyl Betaine(position 3)
- Glycerin(position 4)
- Polyquaternium-7(position 11)
- Guar Hydroxypropyltrimonium Chloride(position 13)
Why this number
Dryingness 23/100 — mildly drying. The reading comes from the ingredient list and its order, not from a measurement. The largest additions: Sodium C14-16 Olefin Sulfonate (position 2), Sodium Chloride (position 6). Pulling the score down: Cocamidopropyl Betaine (position 3), Glycerin (position 4), Polyquaternium-7 (position 11).
Computed from the ingredient list · v2026.08.1
The number is computed from the declared ingredient list and its order. A label does not state concentrations, so this is a reading of the formula — not a prediction of how the product feels in use.
How the dryingness index is calculatedFull ingredient list
- 1
- 2Sodium C14-16 Olefin Sulfonate
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12Bis-Aminopropyl Diglycol Dimaleate
- 13
- 14
- 15
- 16
- 17
- 18
The order is the manufacturer's own and follows concentration down to the one percent mark. Underlined names are flagged by our criteria. Names with a dotted underline open a short note on what the ingredient does in the formula.
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