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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 nourishing moisturizers, soothing toners, gentle eye products, and advanced formulas. The American brand is loved for its dependable ingredients like glycerin and squalane, while the other is cherished for its targeted serums. Both options suit mature skin best, though the heritage house also accommodates sensitive skin with its barrier-supporting properties. They differ mainly in their formulation approaches, with the L'Oréal-owned company focusing on traditional hydration and the latter specializing in biotechnology-driven daily care.

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?

When choosing between Kiehl's and BIOEFFECT, Kiehl's may suit shoppers looking for a large variety of targeted options since the products on this page fit mature skin, sensitive skin, and skin with dark spots best, whereas BIOEFFECT features a single dedicated serum.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide range of cleansers, toners, serums, and moisturizers that fit mature skin, sensitive skin, and skin with dark spots, whereas BIOEFFECT features a single EGF Serum that achieves a Superior Lovi fit for dry skin, dry sensitive skin, and mature skin. The products on this page for both brands are formulated without fragrance, except for two Kiehl's moisturizers.

Which is more affordable, Kiehl's or BIOEFFECT?

Reviews often mention that Kiehl's has a high price point, while BIOEFFECT features a single serum on this page without pricing details noted. Lovi fit ratings are not provided for affordability.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

BIOEFFECT may cause fewer breakouts than Kiehl's because reviewers note that some products on this page for Kiehl's can sometimes cause breakouts and skin irritation.

How does the fragrance content compare between Kiehl's and BIOEFFECT products?

Kiehl's includes fragrance in a small number of the products on this page, whereas every product from BIOEFFECT lists no fragrance in its ingredients.

Which brand offers a wider variety of product types, such as cleansers, toners, masks, and serums?

Kiehl's offers a wider variety of product types on this page, including cleansers, toners, masks, and serums, whereas BIOEFFECT features only a single serum. According to Lovi, the products on this page for Kiehl's fit mature skin and sensitive skin best.

How do the founding years and countries of origin differ between Kiehl's and BIOEFFECT?

Kiehl's was founded in 1851 in the United States, whereas BIOEFFECT was founded in 2010 with its country of origin not specified. Reviewers often mention that Kiehl's offers lightweight, non-greasy moisturizers and gentle serums.

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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