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Some By Mi vs Principia

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

Some By Mi and Principia are skincare lines designed to address diverse complexions through dedicated formulations. Some By Mi relies on niacinamide, centella asiatica, and salicylic acid across serums, cleansers, toners, and moisturizers to suit sensitive and dark spot-prone skin. Meanwhile, the second brand offers thoughtful cleansers and precise formulas that serve balanced to oily skin best. While both help maintain a healthy complexion, they differ in their core ingredients and ideal skin types.

Some By Mi is a Korean skincare brand founded in 2016 and owned by JKL Partners since 2021.

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

Popular Some By Mi vs Principia products

Questions and answers

Some By Mi or Principia: which is better?

Some By Mi is better suited for most shoppers because the products on this page achieve a high or superior Lovi fit across multiple skin types, featuring key ingredients like niacinamide that helps reduce dark spots.

The British Journal of Dermatology, 2002Antioxidants, 2021

What is the difference between Some By Mi and Principia?

Some By Mi offers a wide variety of skincare products on this page with many high Lovi fit levels across skin types, whereas Principia features only a single cleanser with average to caution fit levels. Reviewers often note that Some By Mi delivers brightening effects and gentle serums.

Some By Mi or Principia: which cleanser is better?

Some By Mi offers multiple cleansers on this page that fit acne-prone and oily skin at a High level, whereas Principia has only one cleanser listed, which shows an Average fit for those skin types.

Which is more affordable, Some By Mi or Principia?

The page data does not provide pricing information for either Some By Mi or Principia, so affordability cannot be compared.

Which causes fewer breakouts, Some By Mi or Principia?

Some By Mi helps clear breakouts with its acne-focused products on this page, whereas Principia features only a single cleanser without specific acne-clearing treatments.

Between Some By Mi and Principia, which brand was founded earlier?

Some By Mi was founded earlier in 2016, whereas Principia was founded in 2020.

Which brand offers products with a Superior fit level for dry skin?

Some By Mi offers products with a Superior fit level for dry skin, such as the Yuja Niacin Brightening Moisture Gel Cream and the Snail Truecica Miracle Repair Toner.

Do both Some By Mi and Principia formulate all their products without fragrance?

Yes, both Some By Mi and Principia formulate all the products on this page without fragrance in their ingredients. Reviewers note that Some By Mi products feature no added scent, while offering various lightweight serums and targeted skin care options.

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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