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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 thoughtful formulas and targeted results. The British brand Medik8 focuses on serums, moisturizers, eye products, and toners built around hyaluronic acid, suiting dry and dry sensitive skin best. Conversely, the second option is widely loved for precise cleansers that suit balanced to oily skin best. While both offer standout solutions for concerns like acne, they differ primarily in their core 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 stands out as the better choice overall, offering a wide range of serums and moisturizers with high Lovi fit levels across skin types, whereas Principia only features a single cleanser on this page. Reviewers frequently note that Medik8 products provide deep hydration and plumping, which helps improve skin texture.

Dermatologic Therapy, 2022

What is the difference between Medik8 and Principia?

Medik8 offers a wide range of serums, creams, and cleansers that feature key ingredients like hyaluronic acid, whereas the products on this page for Principia are limited to a single cleanser. Medik8 helps deliver deep hydration and smoothing effects, and Lovi rates its fit as dry skin, dry sensitive skin, and combination skin.

Drug Delivery, 2017Dermatologic Therapy, 2022

Medik8 or Principia: which cleanser is better?

Medik8 stands out for cleansers because Surface Radiance Cleanse achieves a Superior Lovi fit for acne-prone skin and oily acne-prone skin, whereas Principia Gel de Limpeza GL-01 rates lower at Average for those same skin types.

Which is more affordable, Medik8 or Principia?

Reviewers note that Medik8 has a high price point, whereas Principia offers budget-friendly options on this page.

Which causes fewer breakouts, Medik8 or Principia?

Medik8 offers products on this page with better fit levels for acne-prone skin than Principia, such as Surface Radiance Cleanse which has a Superior fit.

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

Medik8 was founded in 2009 in the United Kingdom and has been owned by L'Oréal Groupe since 2025, whereas Principia was founded in 2020 and is owned by Viziera Participações Ltda.

Which brand offers more fragrance-free products according to the page?

Medik8 offers more fragrance-free products on this page, with eleven out of twelve products listing no fragrance.

What specific skin types do the brand-focused routines for Medik8 and Principia suggest they fit best?

The brand-focused routines for Medik8 suggest it fits dry skin, dry sensitive skin, and combination skin best, whereas the routines for Principia do not suggest any specific skin types. Lovi assigns various fit levels to individual products from both brands across multiple skin types.

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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