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Prices in euros. Each store sets its own delivery terms.
Lyko
€51.00 / 100 ml · in stock
€102.00
Buy · LykoAffiliate linkLyko and Cocopanda are Finnish online stores with prices in euros. YesStyle's prices are in British pounds, shown with their approximate value in euros. Cocopanda delivers only within mainland Finland; Lyko's delivery terms also list Sweden, Norway, Denmark, Poland, the Netherlands, Austria, and Germany; YesStyle lists delivery to the US, the UK, Finland, and other countries.
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Kiehl's Ferulic Brew Rejuvenating Facial Essence Toner is a toner (200 ml). Not counting water, the list has amino acids (ARGININE) at no. 1, AHA acids (LACTIC ACID) at no. 6, and SQUALANE at no. 8. The list contains no drying alcohol, silicones, sulfates, or ingredients from our watchlist. Flagged ingredient groups in the list: fragrance (LINALOOL) and essential oil (LAVANDULA HYBRIDA OIL). The ingredient list has 30 ingredients; toners typically have 24. The cheapest price right now is €102.00 at Lyko, which works out to €51.00 / 100 ml. The typical price for toners is €13.32 / 100 ml. One store carries it, and the price was checked 11/5/2026.
Checked against the ingredient list.
Fragrance: LINALOOL, CITRONELLOL, GERANIOL, LIMONENE Essential oil: LAVANDULA HYBRIDA OIL, PELARGONIUM GRAVEOLENS FLOWER OIL, MENTHA PIPERITA OIL / PEPPERMINT OIL
The product contains fragrance or declared fragrance allergens.
The product contains essential oils or plant extracts that naturally carry them.
ARGININE · no. 1, not counting water
Building blocks of protein, and part of the skin's own natural moisturizing factor. In a formula they act as humectants; some also serve as pH adjusters.
30 ingredients6 key7 flagged
The key ingredients, grouped by their job in the formula. A group describes the formula, not an effect on skin.
Picked by product type and shared key ingredients. We do not compare whole ingredient lists yet.
€23.45€9.38 / 100 mlat 2 stores
€29.60€74.00 / 100 mlat 2 stores
No. The list contains ingredients from the fragrance group: LINALOOL, CITRONELLOL, GERANIOL ….
No. The list has no volatile alcohol such as Alcohol Denat. or Ethanol. Fatty alcohols such as Cetearyl Alcohol are not in this group.
At Lyko: €102.00 (checked 11/5/2026).
ARGININE. It is the first ingredient in the list, not counting water. Its role in the formula: pH adjuster.
Some things to note
The classification is read from the ingredient list: Fragrance: LINALOOL, CITRONELLOL, GERANIOL, LIMONENE. Essential oil: LAVANDULA HYBRIDA OIL, PELARGONIUM GRAVEOLENS FLOWER OIL, MENTHA PIPERITA OIL / PEPPERMINT OIL.
The ingredient list has 30 ingredients; toners typically have 24.
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SQUALANE · no. 8, not counting water
A light, well-tolerated oil component, usually obtained from olive or sugarcane. A different ingredient from squalene, which is on our watchlist.
ASCORBYL GLUCOSIDE · no. 12, not counting water
An antioxidant. Derivatives differ in stability.
SALICYLIC ACID · no. 13, not counting water
An oil-soluble acid that can mix with sebum inside the pore.
Confidence: medium · v2026.10.1
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 productsThe 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. Names in bold are key ingredients.
€36.00€90.00 / 100 ml
€16.90€16.90 / 100 mlat 1 store
