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Medik8 vs Principia

Rated by Lovi · Unbiased, science-based skincare AI trained on real user outcomes · How the Fit score works

Medik8 and Principia are two distinct skincare lines known for their specialized approaches to daily care. The British brand, founded in 2009 and owned by L'Oréal Groupe since 2025, offers serums, moisturizers, eye products, toners, and more built around hyaluronic acid, which lengthens toxin wrinkle effect duration, making it best suited for dry and sensitive skin. Conversely, the second brand is widely loved for its thoughtful cleansers and precise formulas that help maintain a healthy, balanced complexion, suiting balanced to oily skin best. While both cater to specific complexions through standout items like Medik8's Surface Radiance Cleanse, Oxy-R Peptides, and Total Moisture Daily Facial Cream alongside Principia's Gel de Limpeza GL-01, they ultimately differ in their primary ingredient focus and ideal skin types.

Medik8 is a British skincare brand founded in 2009 and owned by L'Oréal Groupe since 2025.

loreal.commedik8.comtracxn.com

This page compares some of the most popular Medik8 and Principia products; for every product of both brands, with a fit score for your own skin, use the Lovi app.

Popular Medik8 vs Principia products

Questions and answers

Medik8 or Principia: which is better?

Medik8 is the better choice on this page because it offers a wide variety of well-reviewed products with high and superior fit levels for skin types like dry, sensitive, and dry sensitive skin, whereas Principia features only a single cleanser. Medik8 features key ingredients like hyaluronic acid that helps provide deep hydration.

Dermatologic Therapy, 2022

What is the difference between Medik8 and Principia?

Medik8 offers a wide range of serums, creams, and cleansers that help with anti-aging and hydration across multiple skin types, while Principia features only a single cleanser on this page. Medik8 products on this page often use key ingredients like hyaluronic acid.

Dermatologic Therapy, 2022Drug Delivery, 2017

Medik8 or Principia: which cleanser is better?

Medik8 stands out with its Surface Radiance Cleanse, achieving a Superior Lovi fit level for acne-prone skin, oily acne-prone skin, and skin with dark spots, whereas Principia offers only the Gel de Limpeza GL-01 which rates lower for those skin types.

Which is more affordable, Medik8 or Principia?

Reviewers of Medik8 mention its high price point, while no affordability details are listed for Principia on this page.

Which causes fewer breakouts, Medik8 or Principia?

Medik8 provides a wide range of products on this page with varying fit levels for acne-prone skin, whereas Principia features only one cleanser with a Low fit for acne-prone skin. Medik8 serums are mostly mentioned as gentle and non-irritating.

When were Medik8 and Principia each founded and who owns them?

Medik8 was founded in the United Kingdom in 2009 and is owned by L'Oréal Groupe, while Principia was founded in 2020 and is owned by Viziera Participações Ltda.

How does the Lovi fit level of Medik8's Surface Radiance Cleanse compare to Principia's Gel de Limpeza GL-01 for dry skin?

For dry skin, the Lovi fit level of Medik8's Surface Radiance Cleanse is Low, whereas Principia's Gel de Limpeza GL-01 has a Caution fit.

Which Medik8 products contain fragrance and how does that compare to Principia's fragrance-free product lineup?

Among the products on this page, only Medik8's Total Moisture Daily Facial Cream lists fragrance, whereas every product on Principia's page is fragrance-free.

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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