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Good Molecules vs Principia

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

Good Molecules and Principia are two skincare brands appreciated for their thoughtful formulations and targeted care. The American brand founded in 2019 and owned by Beautylish, Inc. offers serums, moisturizers, eye products, and exfoliants featuring glycerin and hyaluronic acid, while the second brand is widely loved for its thoughtful cleansers and precise formulas. The first brand suits sensitive skin and acne-prone skin best, whereas the second suits balanced to oily skin best. Ultimately, both differ primarily in their specific product lineups and ideal skin types, though they share a commitment to effective compositions.

Good Molecules is an American skincare brand founded in 2019 and owned by Beautylish, Inc..

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

Popular Good Molecules vs Principia products

Questions and answers

Good Molecules or Principia: which is better?

Good Molecules offers a much wider range of products on this page compared to Principia, covering various skincare needs with formulas that contain no fragrance.

What is the difference between Good Molecules and Principia?

Good Molecules offers a wide range of products across multiple skincare categories with various fit levels, whereas Principia currently features only a single cleanser on this page. Reviewers frequently note that Good Molecules products are affordable and help fade dark spots.

Good Molecules or Principia: which cleanser is better?

Good Molecules Hydrating Facial Cleansing Gel is better for most skin types, as Lovi rates it High for dry, sensitive, and mature skin compared to average or lower ratings for Principia Gel de Limpeza GL-01.

Which is more affordable, Good Molecules or Principia?

Good Molecules offers affordable and great value serums and moisturizers across the products on this page.

Which causes fewer breakouts, Good Molecules or Principia?

Good Molecules offers a wide range of products on this page that help with acne-prone skin, whereas Principia features only a single cleanser whose Lovi fit for acne-prone skin is low.

When was each brand founded and who owns them?

Good Molecules was founded in 2019 in the United States and is owned by Beautylish, Inc., while Principia was founded in 2020 and is owned by Viziera Participações Ltda.

Do products from Good Molecules or Principia contain fragrance?

Every product on the Good Molecules and Principia pages lists no fragrance in its ingredients.

Which brand offers a cleanser suitable for dry skin according to the Lovi fit levels?

Good Molecules offers a cleanser suitable for dry skin, as its Hydrating Facial Cleansing Gel has a High fit level for dry skin on this page. In contrast, the cleanser from Principia 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. 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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