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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 established skincare brands cherished for their refined care. The American brand founded in 1851 and owned by L'Oréal S.A. since 2000 is beloved for dependable moisturizers, serums, toners, eye products, and more that incorporate nourishing glycerin and squalane, while the other is cherished for its targeted serums and advanced formulas. Products from both suit mature skin types best, and the first also suits skin with dark spots. They differ because the first offers carefully balanced formulations featuring ingredients like glycerin, which significantly increases hydration and restores epidermal barrier function, and squalane, which counteracts oxidative stress and stimulates fibroblast migration, whereas the second provides refined care for daily routines through standout products like the EGF Serum for acne-prone skin.

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 targeted products with high Lovi fit levels for mature skin, skin with dark spots, and combination skin, while BIOEFFECT features just one serum that achieves a Superior Lovi fit for dry, dry sensitive, and mature skin. Reviewers often mention that Kiehl's provides lightweight moisturizers and deep hydration, but the products on this page may occasionally cause breakouts or skin irritation.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide range of products on this page with varying fit levels across multiple skin types, whereas BIOEFFECT features just one serum that Lovi rates as Superior for dry, dry sensitive, and mature skin. Kiehl's is a long-standing American brand founded in 1851, while BIOEFFECT is a newer company established in 2010.

Which is more affordable, Kiehl's or BIOEFFECT?

The page does not provide pricing information to determine whether Kiehl's or BIOEFFECT is more affordable.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

Reviewers of Kiehl's often mention that the products on this page cause breakouts and skin irritation. In contrast, BIOEFFECT lists no fragrance and features a serum that Lovi rates as having a High fit for acne-prone skin.

Which brand offers more fragrance-free options compared to the other?

BIOEFFECT offers 100 percent fragrance-free products on this page, whereas Kiehl's includes fragrance in two of its products.

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 in 2010 with its country of origin not provided.

What are the key shared ingredients across the products offered by Kiehl's?

The key shared ingredients across the products on this page from 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

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