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COSRX vs Principia

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

COSRX and Principia are a Korean skincare brand founded in 2013 and owned by Amorepacific Group since 2024, and a beloved line of thoughtful cleansers and precise formulas, respectively. The first brand offers serums, moisturizers, cleansers, masks, and more, formulated with hyaluronic acid, glycerin, and niacinamide, which suit oily acne-prone skin and oily skin best, while the second brand suits balanced to oily skin best. Both differ in their specific product lineups, as the former features standout items like the Advanced Snail Mucin Gel Cleanser, the Full Fit Propolis Synergy Toner, and the Centella Water Alcohol-Free Toner, whereas the latter highlights options such as the Gel de Limpeza GL-01.

COSRX is a Korean skincare brand founded in 2013 and owned by Amorepacific Group since 2024.

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

Popular COSRX vs Principia products

Questions and answers

COSRX or Principia: which is better?

COSRX offers a much wider selection on this page with thirty-eight products covering diverse skin types and concerns, whereas Principia lists only a single cleanser. The products on this page for COSRX are frequently noted for lightweight absorption and deep hydration.

What is the difference between COSRX and Principia?

COSRX offers a wide range of 38 products featuring ingredients like snail mucin and niacinamide, whereas Principia is represented by just one cleanser on this page.

COSRX or Principia: which cleanser is better?

COSRX offers cleansers with superior and high Lovi fit levels across multiple skin types, whereas the Principia cleanser on this page generally reaches only average or lower fit levels. COSRX products on this page are frequently noted for gentle application and effective acne control.

Which is more affordable, COSRX or Principia?

The products on this page do not provide pricing information to determine which brand is more affordable.

Which causes fewer breakouts, COSRX or Principia?

COSRX offers multiple products with Superior or High Lovi fit levels for acne-prone skin, whereas Principia lists only a single cleanser with a Low fit for acne-prone skin on this page, making COSRX much more suitable for acne control.

Which brand has been established longer, COSRX or Principia?

COSRX was founded in 2013, whereas Principia was founded in 2020, making COSRX the brand that has been established longer.

How many products on the page contain fragrance for COSRX compared to Principia?

Only 1 product out of 38 on the COSRX page lists fragrance, while Principia has no fragranced products among those on the page.

What skin types do brand-focused routines show COSRX fits best?

The products on this page show that COSRX fits best for oily acne-prone skin, oily skin, and acne-prone skin.

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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