Start with the intended purchase
A shampoo sold for cosmetic cleansing and a licensed treatment shampoo are different purchase categories even when both are placed on a bathroom shelf. The selected Simple400ml and Faith In Nature400ml records are cosmetic-cleansing references. The selected Nizoral60ml record is a medicine with ketoconazole2%w/w and a patient leaflet. A lower price per100ml does not establish that one replaces the other.
Use three concrete records
The dated tickets are£3.30 for Simple400ml at Boots,£8.49 for Faith400ml one-time from the maker and£8.90 for Nizoral60ml at Boots. The two400ml products can be compared for declared volume,ingredient information and purchase conditions. Nizoral’s medicinal purpose,leaflet and seller access conditions require a separate decision rather than a routine value ranking.
A practical shopping example
Suppose a buyer is replacing an already identified cosmetic cleanser and wants to check whether a selected bottle contains a particular listed ingredient. A source-field comparison is useful. If the question is whether scalp symptoms need an antifungal treatment,the purchase ledger cannot decide that. Use the current medicine leaflet and an appropriate pharmacist or clinician rather than selecting a treatment from the cheapest volume rate.
Do not diagnose from marketing words
Sensitive,fragrance-free,natural and scalp-care descriptions are not diagnoses or guarantees that a product will suit every person. Conversely,the presence of a shampoo word does not make every bottle an everyday cosmetic. Keep the actual product purpose,active ingredient where applicable,and current warnings together.
The next useful action
Choose the relevant category first,then verify the exact UK size and version. For a medicine-related question,resolve suitability and seller access through the actual pharmacy process. This site does not collect symptoms,prescribe a routine or claim scalp,hair-growth or clinical tests. Independent pharmacy/chemical/content review and actual received labels remain pending.
A concrete decision record
A practical shortlist can have two columns:the purchase purpose and the exact record. For a cosmetic replacement,put Simple400ml or Faith400ml in the cleansing column. Keep Nizoral60ml in the medicine column. This prevents a retailer category called shampoo from becoming an assumption that all three bottles solve the same problem.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent clinical/chemical/content/commerce review remain pending.
Boots Simple400ml selected redirect10375990/8219443 ↗
Faith In Nature400ml one-time manufacturer record ↗
Boots Nizoral2%w/w60ml10025089/2695103 ↗