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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.

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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 for most shoppers on this page, as it offers a wide range of serums and moisturizers with high Lovi fit levels for dry and sensitive skin. Principia currently features only a single cleanser with lower fit ratings for drier skin types.

What is the difference between Medik8 and Principia?

Medik8 offers a wide range of serums, creams, and cleansers that help with hydration, anti-aging, and brightening, with Lovi giving products like Hydr8 B5 Intense a Superior fit for dry skin. In contrast, Principia features only a single cleanser on this page, Gel de Limpeza GL-01, which is rated as an Average fit for oily skin.

Drug Delivery, 2017Dermatologic Therapy, 2022

Medik8 or Principia: which cleanser is better?

Medik8 Surface Radiance Cleanse has a Superior Lovi fit for oily acne-prone skin and skin with dark spots, whereas Principia Gel de Limpeza GL-01 has only an Average fit.

Which is more affordable, Medik8 or Principia?

Medik8 products on this page are often noted for a high price point, whereas Principia has fewer options listed here without explicit pricing commentary. Reviewers frequently mention cost as a drawback for Medik8.

Which causes fewer breakouts, Medik8 or Principia?

Medik8 is unlikely to cause breakouts and its Surface Radiance Cleanse has a Superior Lovi fit level for acne-prone skin, while Principia has only one cleanser listed on this page, making a direct comparison difficult.

Which brand has been around longer, Medik8 or Principia?

Medik8 has been around longer than Principia, having been founded in the United Kingdom in 2009 while Principia was established in 2020.

Do any Medik8 products contain fragrance, and how does that compare to Principia?

Medik8 offers one scented product on this page, which is Total Moisture Daily Facial Cream, while all other products from Medik8 and every product from Principia list no fragrance.

What are the main pros and cons of Medik8 according to reviewers?

Reviewers note that Medik8 offers gentle and non-irritating serums that provide deep hydration, plumping, and an improved skin texture with a brightening glow. However, common drawbacks of the products on this page include a high price point, occasional packaging issues, and slow or delayed results.

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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