🇸🇦Saudi Arabia

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 formulations and heritages. The American brand is beloved for a thoughtful array of moisturizers, serums, toners, eye products, and more that feature trusted ingredients like glycerin and squalane, suiting dry skin and skin with dark spots best. Conversely, the Icelandic brand is cherished for its targeted serums and advanced formulas that suit mature skin types best. While both offer refined care for daily routines, they differ fundamentally in their active ingredients and targeted benefits.

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 serve different skincare needs well, with Kiehl's offering a wide variety of cleansers, toners, and targeted treatments, while BIOEFFECT features specialized anti-aging care. Lovi rates the EGF Serum from BIOEFFECT as Superior for dry skin, dry sensitive skin, and mature skin. Kiehl's also provides products that achieve Superior ratings from Lovi, such as the Hydro-Plumping Serum Concentrate for dry skin.

What is the difference between Kiehl's and BIOEFFECT?

Kiehl's offers a wide variety of products on this page across multiple skincare categories, whereas BIOEFFECT features just a single serum. For dry skin, Lovi rates the BIOEFFECT EGF Serum as Superior, while Kiehl's products range from Average to Superior depending on the specific item.

Which is more affordable, Kiehl's or BIOEFFECT?

Comparing affordability between the two brands is difficult because BIOEFFECT features only one product on this page, whereas Kiehl's offers a wide range of products with varied price points.

Which causes fewer breakouts, Kiehl's or BIOEFFECT?

When comparing the two brands, BIOEFFECT is unlikely to cause breakouts as every product on this page lists no fragrance. On the other hand, reviewers note that Kiehl's sometimes 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.

Which brand offers a greater variety of products on this page, and what are their specific fit levels for dry skin?

Kiehl's offers a greater variety of products on this page, with Lovi fit levels for dry skin ranging from Superior for the Hydro-Plumping Serum Concentrate to High for items like the Midnight Recovery Omega-Rich Cloud Cream and Caution for the Ultra Facial Oil-Free Gel Cream. BIOEFFECT features a single product, the EGF Serum, which has a Superior fit level for dry skin.

How does the fragrance content differ across the product lines of Kiehl's and BIOEFFECT?

When comparing fragrance content, BIOEFFECT has no fragrance listed in any of the products on this page. Meanwhile, Kiehl's features 26 fragrance-free products out of 28, with only two items containing fragrance.

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