Bathroom minimalism — how many cosmetics do you really need?

The average bathroom in Poland holds 15–25 cosmetics. Day serum, night serum, essence, toner, facial mist, ampoule, eye cream, neck cream… Sound familiar? The cosmetics industry, worth over 500 billion dollars a year, knows exactly how to convince us we need just one more product. But dermatology says otherwise.

The big five — 5 cosmetics that are genuinely enough

According to dermatological consensus, daily skin and body care requires exactly five product categories:

1. A facial cleanser

Your skin needs gentle removal of sebum, dirt and makeup residue. A single mild gel or micellar water with a physiological pH (5.0–5.5) is all it takes. You don't need a separate "morning cleansing gel" and "evening cleansing oil" — a well-formulated gel with glucoside-type surfactants handles both jobs.

2. A moisturiser

Hydration is the foundation of a healthy skin barrier. Look for three types of ingredients: humectants (glycerin, hyaluronic acid — they attract water), emollients (ceramides, squalane — they smooth) and occlusives (petrolatum, shea butter — they prevent water loss). A good moisturiser contains all three.

3. Sunscreen (SPF)

SPF 30 or higher — every day, all year round, not just in summer. UVA radiation (responsible for photoaging) passes through clouds and windows. It's the most effective anti-aging product there is — no 300 zł serum can match a 30 zł sunscreen when it comes to protecting against wrinkles.

4. Shampoo

One shampoo — matched to your scalp type (not your hair!). Oily scalp → a shampoo with medium-strength surfactants. Dry → mild, sulfate-free. Dandruff → with zinc pyrithione or ketoconazole. That's it — you don't need a separate "deep cleansing" shampoo and a "daily wash" one.

5. Shower gel or soap

A gentle gel with a pH of 5.0–6.0 to wash your body. Or a bar — if you prefer a zero-waste approach. That really is all your body needs day to day.

What's truly unnecessary — and why

Here are the products you can safely cut from your routine, along with an explanation of why:

Toner

Historically, toners were created to restore the skin's pH after washing with alkaline soap (pH 9–10). Modern cleansing gels have a physiological pH, so pH correction is unnecessary. If your toner contains salicylic acid or niacinamide, it's actually a serum in water, not a toner. You can get those ingredients from a cream instead.

Eye cream

A study published in the Journal of Cosmetic Dermatology (2020) found that the ingredients in eye creams overlap 90% with those in ordinary moisturisers. The difference is usually a smaller package and a higher price per gram. The exception: products with retinoids at a lower concentration formulated for the delicate skin around the eyes.

Essence / pre-serum / booster

Categories invented by marketing. An essence is a diluted serum. A pre-serum is a step that "prepares the skin for serum" — something with no scientific basis. Your skin doesn't need to be "prepared" for hydration.

A separate exfoliant

If your moisturiser contains AHA/BHA acids or niacinamide, you're already exfoliating. An extra exfoliant is often over-stimulation that damages the hydrolipidic barrier.

Multi-purpose products — fewer packages, the same ingredients

Active ingredients overlapping between products is common and rarely communicated by brands:

• A moisturiser with SPF 30+ — replaces two products with one. If you're not spending hours in the sun, this is perfectly sufficient.
• A 2-in-1 shampoo-and-shower gel with mild surfactants — glucoside-based surfactants (e.g. Coco-Glucoside) work for both hair and body.
• A multi-purpose oil — jojoba or squalane oil will hydrate your face, body and even the ends of your hair.
• A body lotion with SPF — protection and body hydration in a single step.

Check the PurScore ingredient database to see whether your products contain the same actives in different packages — you may be surprised how much duplication you find.

A decision framework — keep it or toss it?

For every cosmetic in your bathroom, ask yourself three questions:

1. Do I notice a difference when I skip it for 2 weeks? If not, the product is unnecessary.
2. Is its active ingredient already in another product I own? Use the PurScore search to compare formulas.
3. Would a dermatologist recommend this step to me? Dermatologists rarely advise more than 4–5 products in a routine.

If the answer to any of these is "no", you have a candidate for elimination.

Minimalism isn't asceticism

Cosmetic minimalism doesn't mean limiting yourself to soap and water. It's about conscious choices: fewer products, but better chosen ones. A vitamin C serum, a retinoid at night — if you genuinely need them and see results, keep them in your routine. The problem starts when you buy yet another cream because "the internet said you need 10 steps".

Every extra product is not just a cost and a package — it's an added risk of irritation and interactions between ingredients. The more ingredients you put on your skin, the higher the chance something will start to irritate it.

For more on how to read ingredient lists and tell the essential from the unnecessary, see the guide Natural vs synthetic ingredients — what "natural" really means.