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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 distinct approaches to daily routines. The American brand, founded in 1851 and owned by L'Oréal S.A. since 2000, offers nourishing moisturizers, targeted serums, soothing toners, and gentle eye products formulated with glycerin and squalane, while the other is cherished for its targeted serums and advanced formulas. Both suit mature skin best, though the first brand also accommodates dry skin with formulations addressing moisture loss and barrier resilience, relying on glycerin to significantly increase hydration and restore epidermal barrier function, and squalane to counteract oxidative stress and stimulate fibroblast migration. Standout options include the Calendula Herbal-Extract Toner for acne-prone skin, the Calendula Deep Cleansing Foaming Face Wash for skin with dark spots, and the Ultra Facial Toner for mature skin from the first brand, alongside the EGF Serum for acne-prone skin from the second.

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 Superior fit for oily skin and toners, while BIOEFFECT features just one serum that rates as a Superior fit for dry skin, dry sensitive skin, and mature skin. BIOEFFECT lists no fragrance in its ingredients, whereas two Kiehl's products contain fragrance.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide variety of skincare items on this page with different fit levels across skin types, whereas BIOEFFECT features a single EGF Serum that Lovi rates as Superior for dry, dry sensitive, and mature skin. Kiehl's products on this page frequently use ingredients like glycerin and Vitamin C, while BIOEFFECT formulates its fragrance-free serum with barley-produced EGF to target aging and skin renewal.

Which is more affordable, Kiehl's or BIOEFFECT?

The products on this page for Kiehl's are frequently noted by reviewers for having a high price point, whereas BIOEFFECT features only one product on this page, making direct price comparisons difficult.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

When comparing the products on this page, reviewers often mention that Kiehl's causes breakouts and skin irritation, while BIOEFFECT offers an EGF Serum with a High fit level for acne-prone skin and lists no fragrance in its ingredients.

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 with its home country listed as not available.

Which products from Kiehl's and BIOEFFECT are formulated without any added fragrance?

The products on this page from Kiehl's are largely formulated without added fragrance, as 26 of 28 products list no fragrance in their ingredients. Additionally, every product from BIOEFFECT lists no fragrance.

What specific skin types do Kiehl's brand-focused routines target best?

Kiehl's brand-focused routines target dry skin, mature skin, and oily acne-prone skin best. Lovi rates the products on this page across these skin types with varying levels of fit, ranging from Caution to Superior.

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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