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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 thoughtful formulations and targeted care. The American brand offers moisturizers, serums, toners, and eye products featuring glycerin and squalane, while BIOEFFECT is cherished for its advanced serums. Both suit dry, sensitive, and mature skin best, though the former emphasizes foundational nourishment with ingredients that increase hydration, restore epidermal barrier function, counteract oxidative stress, and stimulate fibroblast migration, whereas the latter provides refined daily routines.

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, but Kiehl's provides a much wider variety of products for different skin types and concerns on this page. BIOEFFECT features a single concentrated serum that Lovi rates as Superior for dry, dry sensitive, and mature skin.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide range of skincare products on this page with varying fit levels across multiple skin types, whereas BIOEFFECT features a single serum that achieves a Superior Lovi fit level for dry, dry sensitive, and mature skin. Kiehl's uses fragrance in only two of its products, while BIOEFFECT lists no fragrance in its ingredients.

Which is more affordable, Kiehl's or BIOEFFECT?

Comparing the pricing options on this page, Kiehl's offers a wide range of products with varied price points, whereas BIOEFFECT features a limited selection centered around its single high-end serum.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

BIOEFFECT is unlikely to cause breakouts because the products on this page are fragrance-free and limited to a single minimalist serum, whereas reviewers often note that Kiehl's causes breakouts and skin irritation.

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

Kiehl's was founded in 1851 in the United States, whereas BIOEFFECT was founded later in 2010. The products on this page for Kiehl's originate from the United States, while BIOEFFECT's country of origin is not specified.

Which brand offers fragrance-free options across all of its listed products?

BIOEFFECT offers fragrance-free options across all of the products on this page. Kiehl's also provides mostly fragrance-free choices, as 26 of its 28 products list no fragrance.

How many products does each brand feature on the comparison page?

Kiehl's features 28 products on the products on this page, while BIOEFFECT features 1 product.

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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