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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 option on this page, offering a wide variety of well-reviewed serums and moisturizers with high Lovi fit levels for dry, sensitive, and mature skin types. In contrast, Principia features only a single cleanser with lower fit ratings for those skin types.

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 for dry and sensitive skin types as high or superior.

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 oily acne-prone skin, whereas Principia Gel de Limpeza GL-01 only reaches an Average fit there.

Which is more affordable, Medik8 or Principia?

Principia is more affordable, whereas Medik8 products on this page have a high price point. Both brands offer fragrance-free options.

Which causes fewer breakouts, Medik8 or Principia?

Medik8 stands out with multiple products showing a High or Superior Lovi fit for acne-prone skin, whereas the single Principia product on this page has an Average or Low fit for it.

How does the founding year and parent company of Medik8 compare to Principia?

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 products with fragrance, and how many products are affected?

Medik8 is the only brand on this page that offers a product with fragrance, affecting 1 out of its 12 products.

What are the main pros and cons reported by reviewers for Medik8 products?

Reviewers report that Medik8 products provide gentle and non-irritating serums, deep hydration and plumping, improved skin texture, and a brightening glow, sometimes noting a pleasant experience and scent or a luxurious texture. On the downside, shoppers frequently mention a high price point, and sometimes report packaging issues or slow and 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

How does it fit your skin?

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