A £12 moisturiser and a £65 moisturiser sit side by side on the shelf. The expensive one must be better, right? Or is it just better packaging?
The beauty industry is built on the idea that higher price means higher quality. Sometimes that's true. Often it's not. The only way to cut through the marketing is to calculate what you're actually paying per application -- and then decide if those extra ingredients or that luxurious texture are worth the premium.
How We Calculated
For each product, we estimated:
Cost Per Application = Purchase Price / Number of Applications Per Container
Application counts are based on standard product sizes and recommended usage amounts. We compared drugstore and luxury options for each category.
Face: Daily Skincare
Moisturiser
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £8 | 50ml | 60 | £0.13 |
| Mid-range | £28 | 50ml | 60 | £0.47 |
| Luxury | £65 | 50ml | 60 | £1.08 |
Verdict: Drugstore wins. At 13p per application vs £1.08, the luxury moisturiser costs 8x more per use. Unless your skin genuinely responds better to specific high-end ingredients (retinol concentrations, peptide complexes), the basic formula does the same hydrating job.
Serum (Vitamin C)
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £10 | 30ml | 45 | £0.22 |
| Mid-range | £35 | 30ml | 45 | £0.78 |
| Luxury | £85 | 30ml | 45 | £1.89 |
Verdict: Mid-range is the sweet spot. With serums, ingredient concentration and stability actually matter. A £35 serum with 15% vitamin C in a proper airless pump often outperforms both the cheap (low concentration) and luxury (paying for the brand) options.
Sunscreen (SPF 50)
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £6 | 50ml | 30 | £0.20 |
| Mid-range | £15 | 50ml | 30 | £0.50 |
| Luxury | £40 | 50ml | 30 | £1.33 |
Verdict: Just wear it. Dermatologists agree: the best sunscreen is the one you'll actually use. If a £40 sunscreen has a texture that makes you wear it daily while a £6 one sits in the drawer, the expensive one is better value because you actually use it. If you'll wear either, go cheap.
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Makeup: The Cost Per Wear
Foundation
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £9 | 30ml | 35 | £0.26 |
| Mid-range | £32 | 30ml | 35 | £0.91 |
| Luxury | £52 | 30ml | 35 | £1.49 |
Verdict: Drugstore is strong. Foundation technology has improved dramatically at every price point. A £9 drugstore foundation with good shade matching gives you 26p per wear. The luxury version at £1.49 per wear needs to be noticeably better to justify 5.7x the price.
Lipstick
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £6 | 3.5g | 100 | £0.06 |
| Mid-range | £22 | 3.5g | 100 | £0.22 |
| Luxury | £36 | 3.5g | 100 | £0.36 |
Verdict: Everything works. Lipstick is one of the best-value beauty products regardless of price. At 6p per application for drugstore and 36p for luxury, even the expensive option is cheap per use. Buy whatever shade and formula you love -- you'll get your money's worth.
Mascara
| Version | Price | Size | Applications | Cost Per Use |
|---|---|---|---|---|
| Drugstore | £7 | 8ml | 90 (3 months) | £0.08 |
| Mid-range | £24 | 8ml | 90 | £0.27 |
| Luxury | £32 | 8ml | 90 | £0.36 |
Verdict: Drugstore wins. Mascara should be replaced every 3 months regardless of price. That equalises the lifespan, making the cost per use comparison straightforward. At 8p per use, drugstore mascara is hard to beat.
The Surprising Value Champions
Perfume
| Version | Price | Size | Sprays | Cost Per Use |
|---|---|---|---|---|
| Body spray | £5 | 200ml | 400 | £0.01 |
| Mid-range EDT | £45 | 50ml | 500 | £0.09 |
| Luxury EDP | £120 | 50ml | 625 | £0.19 |
Verdict: Luxury perfume is genuinely good value. Eau de Parfum lasts longer per spray (fewer reapplications), has higher concentration (fewer sprays needed), and a 50ml bottle lasts over a year. At 19p per use for something you enjoy every day, this is one category where spending more makes mathematical sense.
Quality Makeup Brushes
| Version | Price | Size | Uses | Cost Per Use |
|---|---|---|---|---|
| Cheap set | £15 | 12 brushes | 365 (1 year) | £0.04 |
| Quality set | £60 | 12 brushes | 2,190 (6 years) | £0.03 |
Verdict: Quality brushes cost less per use. Cheap brushes shed, lose shape, and need replacing yearly. Quality brushes last 5-6 years with proper care. The expensive set is actually cheaper per use over time.
The Full Comparison
| Product | Drugstore | Mid-Range | Luxury | Best Value |
|---|---|---|---|---|
| Moisturiser | £0.13 | £0.47 | £1.08 | Drugstore |
| Serum | £0.22 | £0.78 | £1.89 | Mid-range |
| Sunscreen | £0.20 | £0.50 | £1.33 | Whichever you'll use |
| Foundation | £0.26 | £0.91 | £1.49 | Drugstore |
| Lipstick | £0.06 | £0.22 | £0.36 | Any (all good value) |
| Mascara | £0.08 | £0.27 | £0.36 | Drugstore |
| Perfume | £0.01 | £0.09 | £0.19 | Mid-range/Luxury |
| Brushes | £0.04 | -- | £0.03 | Quality |
The Pattern
Two rules emerge from the data:
1. Daily basics favour drugstore. Moisturiser, foundation, and mascara -- products you burn through quickly -- are almost always better value at the lower end. The cost per use gap is too wide to justify for most people.
2. Long-lasting products favour quality. Perfume, brushes, and tools that last months or years reward higher investment because the cost per use drops with longevity.
The smartest beauty routine isn't all-cheap or all-luxury. It's knowing which products deserve the splurge and which don't.