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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 two distinct skincare lines known for addressing varied complexions with targeted care. COSRX offers thoughtful serums, moisturizers, cleansers, and masks featuring hyaluronic acid, glycerin, and niacinamide to best suit acne-prone and sensitive skin, while Principia provides precise cleansers tailored for balanced to oily skin. The two differ primarily in their ingredient profiles and ideal skin types, offering gentle relief for reactive complexions on one hand and maintaining a healthy, balanced state on the other.

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 larger selection of products on this page across multiple categories, while Principia includes only a single cleanser. COSRX products on this page frequently achieve superior fit levels for skin types like acne-prone and sensitive skin.

What is the difference between COSRX and Principia?

COSRX offers a wide variety of products on this page tailored for acne-prone and sensitive skin, whereas Principia lists only a single cleanser. COSRX products on this page generally feature key ingredients like hyaluronic acid, niacinamide, and snail mucin.

COSRX or Principia: which cleanser is better?

COSRX offers a wider range of cleansers with varying Lovi fit levels, such as the Advanced Snail Mucin Gel Cleanser which is rated Superior for sensitive, acne-prone, dry, dry sensitive, and combination skin, whereas Principia features only one cleanser, the Gel de Limpeza GL-01, which has lower average or cautious fit levels across most skin types on this page.

Which is more affordable, COSRX or Principia?

The page does not provide pricing information to determine whether COSRX or Principia is more affordable.

Which causes fewer breakouts, COSRX or Principia?

COSRX includes multiple products with Superior and High Lovi fit levels for acne-prone skin, whereas the Principia products on this page have a Low fit for acne-prone skin. Therefore, COSRX helps more with acne control.

Which brand has been established longer, COSRX or Principia?

COSRX was founded in 2013, whereas Principia was founded more recently in 2020.

How many products on the page contain fragrance for each brand?

COSRX has one product on this page with fragrance, and Principia has none.

Which skin types does COSRX fit best according to its brand-focused routines?

According to its brand-focused routines, COSRX fits acne-prone skin, sensitive skin, and oily acne-prone skin best.

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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