For hundreds of years, fermentation has been used in various cultures and in medicinal tradition to preserve food, source beneficial acids, probiotics, and antioxidants for overall health and wellness benefits when consumed. When it comes to skincare, fermentation of plant extracts can enrich vitamins, antioxidants, and skin refining acids, which enhances the potency of ingredients. This can lead to soothing skin and even overall visible skin quality improvements.


Inspired by the art of phyto-fermentation and brewing, Kiehl’s chemists set out to create an essence that blends Kiehl’s old-world apothecary knowledge and modern science into an efficacious formula that’s the perfect first step in any skincare routine – introducing Kiehl’s NEW Ferulic Brew Rejuvenating Facial Essence. The fast absorbing formula helps visibly reduce fine lines while rejuvenating the feel of skin’s texture, unveiling healthier looking, more visibly radiant skin.

Through research, Kiehl’s chemists discovered a specialized 120-hour phyto-brewing process using enzymes from germinated Brassica seeds. The 120-hour phyto-brew process involves using plant derived enzymes to breakdown physical plant material to transform it into phyto-components from Brassica extract. The result is an essence with a unique natural scent that visibly boosts skin’s radiance, reduces the appearance of fine lines and visibly improves texture.

The Ferulic Acid in Kiehl’s Ferulic Brew can help skin defend against free radicals from internal and external stressors, such as pollution and stress, which can lead to visible signs of aging. Ferulic Brew also includes skin-boosting Lactic Acid and Squalane. This trio of ingredients work together in this new essence to address early signs of aging through their skin refining and barrier replenishing properties. Within the formula, Lactic Acid and Squalane help refine skin texture, soften fine lines and moisturize, while Ferulic Acid protects from free radical damage for visible radiance. As part of a healthy skincare routine, Kiehl’s Ferulic Brew preps the skin for additional steps in the routine, to better receive targeted serums and moisturizers that follow

With just 4 weeks of use, Ferulic Brew has been clinically demonstrated to help visibly boost radiance (+20% APAC2, +22% 3 Global ex APAC), refine skin texture (+22% APAC2, +20% 3Global ex APAC), and reduce the appearance of fine lines (-19% APAC2, -18%3 Global ex APAC) for skin that looks revitalized.

Consumers agree after 4 weeks, the formula yields strong results in improving the overall look and feel of skin:


✓  97% of participants said skin texture looks refined

✓  97% of participants said skin looks healthier

✓  90% of participants said skin looks revitalized


✓  92% of participants said skin looks rejuvenated

✓  88% of participants said skin texture looks refined

✓  88% of participants said skin feels fresher

1 We consider ingredients to be naturally derived if they retain more than 50% of their molecular structure after being processed from a natural source.

1 Results based on expert grading in a 4-week clinical test

Results based on expert grading in a 4-week clinical test


Ferulic Acid

Ferulic Acid is a naturally-derived antioxidant found in the cell walls of plants, such as bran and certain fruit seeds. Blended in the formula, it helps fight the signs of free radical damage.

Lactic Acid

Naturally found in dairy products, Lactic Acid is an alpha hydroxy acid known for its exfoliation properties. Within the formula, it helps gently exfoliate the skin’s surface while improving moisture and visibly diminishing fine lines and the look of uneven or rough texture.


A signature Kiehl’s ingredient, Squalane is a botanically derived lipid. With an exceptional affinity to skin, Squalane absorbs easily and works within the
formula to replenish skin with moisture keeping it feeling soft, supple, and moisturized.


Ferulic Brew can be applied after cleansing both morning and evening. Pour a few drops into the palm of your hand and gently press the formula into skin, focusing on the cheeks, forehead, and chin.

RRP:   €52.00 (100ml) and €85.00 (200ml)