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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 and BIOEFFECT both offer targeted skincare options, with Kiehl's providing a wide range of products for various skin types and concerns while BIOEFFECT features a specialized serum rated Superior for dry, dry sensitive, and mature skin. Lovi rates the products on this page for Kiehl's as fitting best for skin with dark spots, combination skin, and mature skin.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide range of products on this page tailored for various skin concerns, whereas BIOEFFECT features a single fragrance-free EGF Serum that Lovi rates as having superior fit for dry and mature skin.

Which is more affordable, Kiehl's or BIOEFFECT?

The provided page facts do not mention pricing information for either Kiehl's or BIOEFFECT, so it is not possible to determine which brand is more affordable.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

When comparing the two brands, Kiehl's reviewers often mention breakouts and skin irritation, whereas BIOEFFECT's EGF Serum rates as High for acne-prone skin and includes no fragrance.

How do the founding years and home countries of Kiehl's and BIOEFFECT compare?

Kiehl's was founded in 1851 in the United States, whereas BIOEFFECT was founded later, in 2010.

Which products from Kiehl's are fragrance-free, and does BIOEFFECT include fragrance in its products?

26 of the 28 products on this page from Kiehl's list no fragrance, with only the Age Defender Moisturizer and Facial Fuel Energizing Moisture Treatment for Men containing fragrance. BIOEFFECT also includes no fragrance in any of the products on this page.

What are the main key ingredients featured across Kiehl's product line?

The main key ingredients featured across the products on this page for Kiehl's include Glycerin, Vitamin C, Squalane, Shea butter, and Vitamin E.

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

How does it fit your skin?

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