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ISDIN vs Principia

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

ISDIN and Principia are two skincare brands offering thoughtful products with precise formulas designed to nurture a healthy, balanced complexion. The Spanish heritage brand ISDIN, founded in 1975 and owned by Puig, is known for sophisticated moisturizers, sunscreens, serums, and eye products like Fusion Water, Eryfotona Actinica, and K-Ox Eyes, which suit acne-prone skin and combination skin best. Meanwhile, the second brand is widely loved for its thoughtful cleansers, such as the Gel de Limpeza GL-01, that suit balanced to oily skin best. While both brands rely on carefully crafted blends for gentle efficacy, they differ in their specific product types and ideal skin types.

ISDIN is a Spanish skincare brand founded in 1975 and owned by Puig.

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

Popular ISDIN vs Principia products

Questions and answers

ISDIN or Principia: which is better?

ISDIN is the better choice for the products on this page because it offers a much wider range of items tailored for acne-prone, combination, and sensitive skin, whereas Principia only features a single cleanser.

What is the difference between ISDIN and Principia?

ISDIN offers a much wider selection of skincare products on this page, including highly rated sunscreens, serums, and moisturizers, whereas Principia only features a single cleanser. Reviewers often mention ISDIN for its ultralight and makeup-friendly sunscreens, though some note a high price point and strong fragrance.

Which is more affordable, ISDIN or Principia?

Principia offers lower-cost options, while shoppers often mention that ISDIN has a high price point.

Which causes fewer breakouts, ISDIN or Principia?

Neither brand can be said to cause fewer breakouts, as the products on this page have varied acne-prone fit levels, with ISDIN offering options like Eryfotona Actinica that has a High Lovi fit for acne-prone skin and Principia featuring Gel de Limpeza GL-01 which has an Average Lovi fit for oily acne-prone skin.

When was ISDIN founded compared to Principia?

ISDIN was founded in 1975, whereas Principia was founded later in 2020.

Which brand has more fragrance-free products on the page?

Principia has more fragrance-free products on the page, as every product listed for the brand contains no fragrance. In comparison, several of ISDIN products on this page list fragrance in their ingredients.

How does the Lovi fit level for dry skin compare between ISDIN's Fusion Water and Principia's Gel de Limpeza GL-01?

ISDIN's Fusion Water has a Superior Lovi fit level for dry skin, whereas Principia's Gel de Limpeza GL-01 has a Caution fit level for dry 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. Sof铆a Perea P茅rez, MD, MSc

    Dr. Sof铆a Perea P茅rez, 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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