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Kiehl's vs BIOEFFECT

Rated by Lovi · Unbiased, science-based skincare AI trained on real user outcomes · How the Fit score works

Kiehl's and BIOEFFECT are two distinct skincare lines known for their thoughtful formulations and targeted care. The American brand, founded in 1851 and owned by L'Oréal S.A. since 2000, offers nourishing moisturizers, serums, toners, and eye products featuring glycerin and squalane, which together significantly increase hydration, restore epidermal barrier function, counteract oxidative stress, and stimulate fibroblast migration. Meanwhile, the Icelandic counterpart is cherished for its advanced formulas and specialized serums that provide refined care for daily routines. Kiehl's suits skin with dark spots and combination skin best, with standout items like the Calendula Herbal-Extract Toner for acne-prone skin, the Calendula Deep Cleansing Foaming Face Wash for dark spots, and the Ultra Facial Toner supporting mature skin, whereas both the EGF Serum from BIOEFFECT and the broader offerings of the latter brand suit mature skin types best.

Kiehl's is an American skincare brand founded in 1851 and owned by L'Oréal S.A. since 2000.

loreal.comen.wikipedia.org

This page compares some of the most popular Kiehl's and BIOEFFECT products; for every product of both brands, with a fit score for your own skin, use the Lovi app.

Popular Kiehl's vs BIOEFFECT products

Kiehl's vs BIOEFFECT serums and treatments

Questions and answers

Kiehl's or BIOEFFECT: which is better?

Kiehl's offers a wide variety of products on this page that are a High fit for acne-prone skin, whereas BIOEFFECT features a single serum with a Superior fit for dry skin. Both brands focus on fragrance-free formulations across many of their options.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide selection of products on this page, whereas BIOEFFECT features just one serum, the EGF Serum. Lovi rates the EGF Serum as a Superior fit for dry skin, dry sensitive skin, and mature skin.

Which is more affordable, Kiehl's or BIOEFFECT?

The products on this page for Kiehl's have a high price point according to reviewers, while BIOEFFECT features only one product on the page with no pricing details mentioned.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

BIOEFFECT is unlikely to cause breakouts as every product on this page lists no fragrance, whereas reviewers mention that Kiehl's may cause breakouts and skin irritation.

Which Kiehl's products contain added fragrance compared to BIOEFFECT?

Age Defender Moisturizer and Facial Fuel Energizing Moisture Treatment for Men are the Kiehl's products on this page that contain added fragrance, whereas every BIOEFFECT product on this page lists no fragrance.

How does the Lovi fit level for dry skin compare between Kiehl's Hydro-Plumping Serum Concentrate and BIOEFFECT EGF Serum?

Kiehl's Hydro-Plumping Serum Concentrate achieves a Superior Lovi fit level for dry skin, matching the Superior Lovi fit level of BIOEFFECT EGF Serum. Both products are well-suited for addressing dry skin concerns according to the page facts.

What are the founding years and home countries of Kiehl's and BIOEFFECT?

Kiehl's was founded in 1851 in the United States, while BIOEFFECT was founded in 2010 in n/a.

Research behind their key ingredients

Behind this comparison

Lovi compares products by their fit scores, calculated from the full ingredient list with brand-independent rules our dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update.

  • Nadia Kapleva, MS

    Nadia Kapleva, MS

    Co-founder, Medical Director

    Cosmetic chemist, cosmetologist, aesthetic products developer

  • Alexey Shagraev, PhD

    Alexey Shagraev, PhD

    Co-founder, CEO and CTO

    PhD in computer science, 3x US patent holder, ex-Google, ex-Yandex

  • Dr. Sofía Perea Pérez, MD, MSc

    Dr. Sofía Perea Pérez, MD, MSc

    Medical Board

    Aesthetic medicine practitioner, MSc in Longevity and Anti-Aging Medicine

  • Aishani Shah, MD

    Aishani Shah, MD

    Medical Board

    Specialist dermatologist, MBBS, MD, IFAAD

  • Asya Zubkova, MS

    Asya Zubkova, MS

    Medical Board

    Cosmetic chemist, SCS, IFSCC member

  • Hanna Kurets, MD

    Hanna Kurets, MD

    Medical Board, Medical Advisor

    Dermatology MD

  • Elina Nazarenko, MD

    Elina Nazarenko, MD

    Medical Board

    Dermatology and diagnostic consultant

  • Victoria Derkova, MS

    Victoria Derkova, MS

    Medical Board

    Cosmetic chemist, cosmetic development technologist

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