Moisturisers are a useful example of why ingredient literacy is more informative than a single marketing phrase. A formula may combine water-binding ingredients, oily or emollient materials, occlusive materials, emulsifiers, thickeners and preservatives in different proportions.
Three ingredient roles commonly discussed
| Role | What the term means in formulation discussions | Examples you may see on labels |
|---|---|---|
| Humectant | Ingredients associated with attracting or holding water | Glycerin, sodium hyaluronate, propanediol |
| Emollient | Materials used to improve feel and smoothness | Various esters, oils, fatty alcohols |
| Occlusive | Materials used to reduce water loss from a surface | Petrolatum and some waxy/oily materials |
These are functional categories, not a medical recommendation system. Many formulas contain ingredients that can serve more than one formulation role.
Gel, lotion and cream are format descriptions
Texture names are useful for organising products but are not tightly standardised consumer performance grades. One brand’s “gel cream” can feel different from another brand’s. Record the exact label term rather than assuming identical textures.
Packaging can affect comparison
Jars, tubes and pumps differ in volume, dispensing method and portability. Some brands also make airless or opaque-pack claims. Those are objective fields that can be recorded without judging which is preferable.
Use price per 50 g or 100 ml for value comparisons
Moisturisers are sold by weight or volume. Compare like with like. If one pack is listed in grams and another in millilitres, do not assume a 1:1 conversion unless the manufacturer provides the necessary information.
Format, declared quantity, price per declared unit, complete ingredient list, fragrance claim where stated, pump/jar/tube, manufacturer/importer, country of origin where stated, and wording of claims.
Frequently asked questions
Does “gel” always mean oil-free?
No. “Gel” describes the product format; verify any oil-free claim separately.
Can grams and millilitres be compared directly?
Not reliably without density information. Keep unit-price calculations in the unit actually declared.
Are humectant, emollient and occlusive categories exclusive?
No. Formulation ingredients can have overlapping functions.
Sources and reference framework
DermaQA uses primary or official references where practical. Product formulas and labels can change, so the current pack and manufacturer page remain the most direct references for a specific product.
Last checked: 19 September 2026. This page explains product information and label terminology; it does not provide personalised medical advice or a product recommendation.