🇳🇱Netherlands

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 renowned skincare lines that offer distinct approaches to daily beauty routines. Kiehl's is cherished for its thoughtful array of moisturizers, serums, toners, eye products, and more, all anchored by nourishing ingredients like glycerin and squalane, while BIOEFFECT is cherished for its targeted serums and advanced formulas. The former suits skin with dark spots and mature skin best, offering standout choices like 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, whereas the latter suits mature skin types best, featuring the EGF Serum for acne-prone skin. They differ primarily in their active compositions and specific target concerns, as glycerin significantly increases hydration and restores epidermal barrier function and squalane counteracts oxidative stress and stimulates fibroblast migration within the American brand's offerings.

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?

Both Kiehl's and BIOEFFECT offer products on this page that are well-suited for various skin types, but BIOEFFECT's EGF Serum achieves a Superior fit for dry, dry sensitive, and mature skin. Kiehl's provides a much wider range of products, with specific formulas that achieve a Superior fit for oily skin and targeted concerns like dark spots. The products on this page from BIOEFFECT list no fragrance, while Kiehl's includes fragrance in only two of its formulas.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide range of twenty-eight skincare products that feature various formulations, whereas BIOEFFECT provides a single specialized serum on this page. Kiehl's best fits skin with dark spots, mature skin, and dry skin, while BIOEFFECT achieves a Superior fit for dry skin, dry sensitive skin, and mature skin.

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?

BIOEFFECT offers a single fragrance-free serum on this page with a high fit for acne-prone skin, whereas Kiehl's features several products that reviewers note may cause breakouts and skin irritation.

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

Kiehl's has fragrance in a couple of its products on this page, while BIOEFFECT includes no fragrance in any of its products. Shoppers can easily check the ingredient lists for these scents.

Which brand offers a wider variety of product types for dry skin based on the provided Lovi fit levels?

Kiehl's offers a much wider variety of product types for dry skin, including cleansers, toners, serums, masks, and moisturizers with various fit levels across the products on this page, whereas BIOEFFECT lists only a single serum.

What are some of the main pros and cons reported by reviewers for Kiehl's skincare?

Reviewers of Kiehl's often highlight lightweight, non-greasy moisturizers, gentle serums, and deep hydration as main pros. On the downside, reviewers frequently report a high price point, breakouts, skin irritation, and products not being rich or effective enough.

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?

Scan your face, then any product: Lovi shows how well it fits you and what fits even better.

QR code: get the Lovi app
Download on theApp Store Get it onGoogle Play