Simple and Principia are two distinct skincare collections known for thoughtful cleansers, gentle moisturizers, makeup removers, and precise formulas. The British brand is widely loved for products enriched with niacinamide and glycerin that suit acne-prone skin and oily skin best, while the other brand is favored for maintaining a healthy, balanced complexion across balanced to oily skin. They differ primarily in their exact product types, ingredient formulations, and historical origins.
Simple is a British skincare brand founded in 1960 and owned by Unilever PLC since 2011.
This page compares some of the most popular Simple and Principia products; for every product of both brands, with a fit score for your own skin, use the Lovi app.
Simple is the better choice on this page because it offers a wider variety of products with High and Average Lovi fit levels across multiple skin types, whereas Principia features only a single cleanser with lower fit ratings for dry skin. Glycerin helps maintain skin hydration, and Niacinamide may help reduce dark spots.
What is the difference between Simple and Principia?
Simple offers a wide range of fragrance-free cleansers, makeup removers, and moisturizers featuring niacinamide and glycerin that generally achieve average to high fit levels across various skin types, whereas Principia features only a single cleanser on this page with lower fit levels for dry and sensitive skin. Niacinamide helps reduce cutaneous pigmentation and signs of skin aging.
Simple features multiple cleansers with an average fit for many skin types, whereas Principia's cleanser ranges from average to caution on dry and sensitive skin. Glycerin helps provide hydration in cleansers.
Simple features lightweight, value-friendly moisturizers among the products on this page, whereas Principia does not list comparable pricing information here.
Which causes fewer breakouts, Simple or Principia?
Simple features products on this page that may cause breakouts or irritations as reviewers often note, while Principia lacks sufficient data on this specific issue for a direct comparison.
Between Simple and Principia, which brand offers more product options on this page?
Simple offers more product options on this page, featuring seven items compared to just one from Principia.
Which brand was founded earlier, Simple or Principia?
Simple was founded earlier, in 1960 in the United Kingdom, whereas Principia was founded in 2020.
Do any products from either Simple or Principia contain fragrance?
Every product from both Simple and Principia on this page lists no fragrance in its ingredients.
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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.
