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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 skincare brands offering thoughtful cleansers, serums, moisturizers, eye products, toners, and more. The British brand is known for hyaluronic acid formulas that suit mature, acne-prone, and dark-spot concerns, while the other brand is widely loved for precise formulas that suit balanced to oily skin best. Both help maintain a healthy, balanced complexion, but they differ in their key ingredient focus and specific product lineups.

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 generally better than Principia because the products on this page offer a much wider variety of serums, cleansers, and moisturizers for all skin types, whereas Principia only features a single cleanser. Furthermore, topical hyaluronic acid helps improve skin quality and signs of skin aging.

Dermatologic Therapy, 2022

What is the difference between Medik8 and Principia?

Medik8 offers a much broader range of serums, creams, toners, and cleansers with varied Lovi fit levels across skin types, while Principia only features a single cleanser on this page. Medik8 features key ingredients like hyaluronic acid that helps improve skin quality.

Dermatologic Therapy, 2022

Medik8 or Principia: which cleanser is better?

Medik8 Surface Radiance Cleanse has a Superior fit for acne-prone skin and skin with dark spots on this page, whereas Principia Gel de Limpeza GL-01 has an Average fit for those skin types.

Which is more affordable, Medik8 or Principia?

Medik8 reviewers often mention a high price point as a drawback, whereas Principia offers budget-friendly skincare options.

Which causes fewer breakouts, Medik8 or Principia?

Medik8 offers products on this page like Surface Radiance Cleanse that achieve a Superior fit for acne-prone skin, whereas Principia has only one cleanser on this page with an Average or Low fit for breakout-prone skin. Topical ingredients like hyaluronic acid help support skin hydration while addressing signs of aging.

Drug Delivery, 2017Dermatologic Therapy, 2022

Between Medik8 and Principia, which brand offers products with fragrance?

Medik8 offers products with fragrance, such as its Total Moisture Daily Facial Cream, whereas all products on this page from Principia list no fragrance. Reviewers note that Medik8 products provide a pleasant experience and scent.

How do the founding years and corporate ownership of Medik8 and Principia compare?

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

Which brand provides a wider variety of product types, such as serums, toners, and moisturizers?

Medik8 offers a much wider variety of product types on this page, including multiple serums, a toner, moisturizers, and a cleanser, whereas Principia features only a single cleanser. This gives shoppers a broad selection of formulas for different steps in a skincare routine.

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?

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