# Simple vs Principia

Page: https://lovi.care/skincare/ca/compare/simple-vs-principia

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Canada.

Simple and Principia are two skincare brands known for gentle formulations and dependable daily care. Simple features soothing makeup removers, refreshing toners, cleansers, and moisturizers with [niacinamide](https://lovi.care/skincare/ca/ingredients/niacinamide) and [glycerin](https://lovi.care/skincare/ca/ingredients/glycerin), while the latter offers thoughtful cleansers and precise formulas. The British brand suits oily and mature skin best, whereas the other brand suits balanced to oily skin. They differ primarily in their product types, specific standout offerings, and exact ingredient focuses.

Simple is a British skincare brand founded in 1960 and owned by Unilever PLC since 2011.

[en.wikipedia.org](https://en.wikipedia.org/wiki/Simple_Skincare) [sec.gov](https://www.sec.gov/Archives/edgar/data/1368457/000119312511134453/dex991.htm) [prnewswire.com](https://www.prnewswire.com/news-releases/alberto-culver-announces-that-unilever-has-received-approval-from-the-us-department-of-justice-to-complete-the-acquisition-of-the-company-121400884.html) [simple.co.uk](https://www.simple.co.uk/philosophy.html)

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](https://app.pora.ai/vqqJ/j1xj2b6o?af_sub2=compare&af_sub3=selection_note&af_sub4=pg9c9beadb69).

### Popular Simple vs Principia products

#### Simple

- [Micellar Water](https://lovi.care/skincare/ca/p/simple/micellar-water/for/mature-skin) — Average fit — [CA$11.99 at Amazon](https://www.amazon.ca/dp/B0GQQSFPG9?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
- [Micellar Cleansing Water](https://lovi.care/skincare/ca/p/simple/micellar-cleansing-water/for/sensitive-skin) — High fit — [CA$11.99 at Amazon](https://www.amazon.ca/dp/B0GQQSFPG9?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
- [Hydrating Light Moisturiser](https://lovi.care/skincare/ca/p/simple/hydrating-light-moisturiser/for/dry-skin) — Average fit — [CA$15.88 at Amazon](https://www.amazon.ca/dp/B000LQX6XG?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
- [Refreshing Facial Wash](https://lovi.care/skincare/ca/p/simple/refreshing-facial-wash/for/acne-prone-skin) — Average fit — [CA$12.79 at Amazon](https://www.amazon.ca/dp/B000LQUA6M?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
- [Replenishing Rich Moisturiser](https://lovi.care/skincare/ca/p/simple/replenishing-rich-moisturiser/for/dry-skin) — Average fit — [CA$13.40 at Amazon](https://www.amazon.ca/dp/B000LNHB6M?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)
- [Water Boost Hydrating Gel Cream](https://lovi.care/skincare/ca/p/simple/water-boost-hydrating-gel-cream/for/dry-skin) — Average fit
- [Kind to Skin Soothing Facial Toner](https://lovi.care/skincare/ca/p/simple/kind-to-skin-soothing-facial-toner/for/mature-skin) — Superior fit — [CA$18.72 at Amazon](https://www.amazon.ca/dp/B076V2D94Y?tag=lovi-care-web-product01-20&linkCode=osi&th=1&psc=1)

#### Principia

- [Gel de Limpeza GL-01](https://lovi.care/skincare/ca/p/principia/gel-de-limpeza-gl-01/for/oily-skin) — Average fit

## Questions and answers

### Simple or Principia: which is better?

Simple is the better choice on this page, as its products on this page achieve High fit levels for sensitive, acne-prone, and combination skin types. [Glycerin](https://lovi.care/skincare/ca/ingredients/glycerin) helps maintain skin hydration, while [niacinamide](https://lovi.care/skincare/ca/ingredients/niacinamide) may help improve skin aging and pigmentation.

[Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### What is the difference between Simple and Principia?

Simple offers a broad variety of products on this page with better overall fit levels across multiple skin types compared to Principia, which features only a single cleanser with caution ratings for dry skin. Both brands formulate their products on this page without added fragrance.

### Simple or Principia: which cleanser is better?

Simple offers a range of cleansers with varying Lovi fits from Low to High depending on the specific product and skin type, whereas Principia has just one cleanser on this page with Average to Caution fits. Glycerin helps maintain skin hydration across the cleansing formulas.

[Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/)

### Which is more affordable, Simple or Principia?

Simple features value-friendly moisturizers among the products on this page, while the provided page facts do not mention the price of Principia.

### Which causes fewer breakouts, Simple or Principia?

Simple features products on this page that some reviewers report as causing breakouts or irritations, while the single Principia cleanser listed has no user breakout feedback provided.

### How do the founding years and owning companies of Simple and Principia compare?

Simple was founded in 1960 in the United Kingdom and has been owned by Unilever PLC since 2011, whereas Principia was founded in 2020 and is owned by Viziera Participações Ltda.

### Which brand offers a greater variety of products on this page, and what are their fragrance statuses?

Simple offers a greater variety of products on this page, while Principia includes just one cleanser. Every product on this page from both brands lists no fragrance in its ingredients.

### What are the main skin types that Simple fits best according to its brand-focused routines?

According to its brand-focused routines, Simple fits oily skin, mature skin, and combination skin best.

## Research behind their key ingredients

- [The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer](https://pubmed.ncbi.nlm.nih.gov/12100180/) Niacinamide · The British Journal of Dermatology, 2002
- [Mechanistic Basis and Clinical Evidence for the Applications of Nicotinamide (Niacinamide) to Control Skin Aging and Pigmentation](https://pubmed.ncbi.nlm.nih.gov/34439563/) Niacinamide · Antioxidants, 2021
- [Topical use of dexpanthenol in skin disorders](https://pubmed.ncbi.nlm.nih.gov/12113650/) Panthenol, Panthenol vitamin b5 · American Journal of Clinical Dermatology, 2002
- [Apigenin inhibits UVA-induced cytotoxicity in vitro and prevents signs of skin aging in vivo](https://pubmed.ncbi.nlm.nih.gov/27279007/) Chamomilla recutita flower extract matricaria flower extract · International Journal of Molecular Medicine, 2016
- [The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluid: an intra-subject, randomized, assessor-blinded study](https://pubmed.ncbi.nlm.nih.gov/28860834/) Glycerin · Clinical, Cosmetic and Investigational Dermatology, 2017
- [Randomized controlled study for the anti-aging effect of human adipocyte-derived mesenchymal stem cell media combined with niacinamide after laser therapy](https://pubmed.ncbi.nlm.nih.gov/33103316/) Niacinamide · Journal of Cosmetic Dermatology, 2021
- [A new topical panthenol-containing emollient: Results from two randomized controlled studies assessing its skin moisturization and barrier restoration potential, and the effect on skin microflora](https://pubmed.ncbi.nlm.nih.gov/27425824/) Panthenol, Panthenol vitamin b5 · The Journal of Dermatological Treatment, 2017
- [Senomorphic activity of a combination of niacinamide and hyaluronic acid: correlation with clinical improvement of skin aging](https://pubmed.ncbi.nlm.nih.gov/39009698/) Niacinamide · Scientific Reports, 2024
- [Stable Ozonides with Vitamin E Acetate versus Corticosteroid in the Treatment of Lichen Sclerosus in Foreskin: Evaluation of Effects on Inflammation](https://pubmed.ncbi.nlm.nih.gov/30991399/) Tocopheryl acetate vitamin e, Tocopheryl acetate · Urologia Internationalis, 2019
- [A Double-Blinded, Randomized, Vehicle-Controlled Study of the Efficacy of Moisturizer Containing Licochalcone A, Decanediol, L-Carnitine, and Salicylic Acid for Prevention of Acne Relapse in Asian Population](https://pubmed.ncbi.nlm.nih.gov/33150170/) Salicylic acid · BioMed Research International, 2020
- [Efficacy of a topical gel containing chitosan, chlorhexidine, allantoin and dexpanthenol for pain and inflammation control after third molar surgery: A randomized and placebo-controlled clinical trial](https://pubmed.ncbi.nlm.nih.gov/32683390/) Panthenol, Panthenol vitamin b5, Allantoin · Medicina Oral, Patologia Oral Y Cirugia Bucal, 2020
- [High molecular compounds (polysaccharides and proanthocyanidins) from Hamamelis virginiana bark: influence on human skin keratinocyte proliferation and differentiation and influence on irritated skin](https://pubmed.ncbi.nlm.nih.gov/11684194/) Witch hazel leaf water · Phytochemistry, 2001
- [Efficacy of a multitargeted, salicylic acid-based dermocosmetic cream compared to benzoyl peroxide 5% in Acne vulgaris: Results from a randomized study](https://pubmed.ncbi.nlm.nih.gov/37941097/) Salicylic acid · Journal of Cosmetic Dermatology, 2024
- [Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatment](https://pubmed.ncbi.nlm.nih.gov/19134126/) Sodium ascorbyl phosphate · International Journal of Cosmetic Science, 2009
- [A Salicylic Acid-Based Dermocosmetic is Effective as an Adjunct to Benzoyl Peroxide for Mild to Moderate Acne and as Monotherapy in Maintenance Post Benzoyl Peroxide](https://pubmed.ncbi.nlm.nih.gov/38051857/) Salicylic acid · Journal of Drugs in Dermatology, 2023
- [Efficacy and Tolerability of Topical Nicotinamide Plus Antibacterial Adhesive Agents and Zinc-Pyrrolidone Carboxylic Acid Versus Placebo as an Adjuvant Treatment for Moderate Acne Vulgaris in Indonesia: A Multicenter, Double-blind, Randomized, Controlled Trial](https://pubmed.ncbi.nlm.nih.gov/32983333/) Zinc pca · The Journal of Clinical and Aesthetic Dermatology, 2020
- [Whitening effect of alpha-bisabolol in Asian women subjects](https://pubmed.ncbi.nlm.nih.gov/20642768/) Bisabolol · International Journal of Cosmetic Science, 2010
- [Assessment of Combined Ascorbyl Palmitate (AP) and Sodium Ascorbyl Phosphate (SAP) on Facial Skin Sebum Control in Female Healthy Volunteers](https://pubmed.ncbi.nlm.nih.gov/27756097/) Sodium ascorbyl phosphate · Drug Research, 2017
- [Understanding Solar Skin Elastosis-Cause and Treatment](https://pubmed.ncbi.nlm.nih.gov/30052192/) Witch hazel leaf water · Journal of Cosmetic Science, 2018
- [Borage Oil Treated with Immobilized Lipase Inhibits Melanogenesis](https://pubmed.ncbi.nlm.nih.gov/33128473/) Borago officinalis seed oil · Lipids, 2020
- [Influence of vitamin E acetate on stratum corneum hydration](https://pubmed.ncbi.nlm.nih.gov/9706379/) Tocopheryl acetate vitamin e, Tocopheryl acetate · Arzneimittel-Forschung, 1998
- [Evaluation of the Efficacy and Safety of a Panthenol-Enriched Mask for Skin Barrier Recovery After Facial Laser Treatment: Results of a Double-Blind Randomized Controlled Study](https://pubmed.ncbi.nlm.nih.gov/40613435/) Panthenol, Panthenol vitamin b5 · Journal of Cosmetic Dermatology, 2025
- [Modulation of skin pigmentation by the tetrapeptide PKEK: in vitro and in vivo evidence for skin whitening effects](https://pubmed.ncbi.nlm.nih.gov/22142309/) Sodium ascorbyl phosphate · Experimental Dermatology, 2012
- [Nanostructured Lipid Carrier Based Gel Containing α-Tocopherol and α-Tocopheryl Acetate for Synergistic Cutaneous Antiaging Efficacy](https://pubmed.ncbi.nlm.nih.gov/41309687/) Tocopheryl acetate · Scientific Reports, 2025
- [Safety assessment on comedogenicity of dermatological products containing d-alpha tocopheryl acetate in Asian subjects: A double-blind randomized controlled trial](https://pubmed.ncbi.nlm.nih.gov/34471722/) Tocopheryl acetate vitamin e, Tocopheryl acetate · Contemporary Clinical Trials Communications, 2021
- [Impact of dermal emulsions containing diacyl phospholipids, mono acyl phospholipids, sodium lauryl ether sulfate and polysorbate 80 in combination with UVA irradiation on human skin physiology in vivo: A pilot study](https://pubmed.ncbi.nlm.nih.gov/42617898/) Sodium laureth sulfate · International Journal of Pharmaceutics, 2026
- [A novel facial moisturizer containing Saccharide isomerate accelerates skin barrier restoration following intense pulsed light treatment: a randomized split-face study](https://pubmed.ncbi.nlm.nih.gov/41211697/) Saccharide isomerate · The Journal of Dermatological Treatment, 2025
- [Efficacy and safety of combination cream of stimu-tex AS™ (spent grain wax, Argania Spinosa Kernel oil, Butyrospermum Parkii (shea butter) extract), and saccharide isomerate after fractional CO2 laser procedure: split-face, double blinded, randomized controlled trial](https://pubmed.ncbi.nlm.nih.gov/41134387/) Saccharide isomerate · Lasers in Medical Science, 2025
- [Saccharide isomerate ameliorates cosmetic scalp conditions in a Chinese study population](https://pubmed.ncbi.nlm.nih.gov/35279940/) Saccharide isomerate · Journal of Cosmetic Dermatology, 2023

## The brands

- British skincare: [Simple](https://lovi.care/skincare/ca/brands/simple)
- Skincare: [Principia](https://lovi.care/skincare/ca/brands/principia)

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## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi compares products by their fit scores, calculated from the full ingredient list with brand-independent rules its 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. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this comparison: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/compare/simple-vs-principia
- United Kingdom: https://lovi.care/skincare/uk/compare/simple-vs-principia
- Ireland: https://lovi.care/skincare/ie/compare/simple-vs-principia
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- Canada: https://lovi.care/skincare/ca/compare/simple-vs-principia (this page)
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