Ingredient Guide
Heavy creams and ointments help seal water in. Urea, lactic acid or salicylic acid may soften scale in suitable areas, but strength, body site and total area matter.
Start here.
- Humectants attract water; emollients soften; occlusives reduce evaporation.
- Condition-specific context changes the choice: A moisturiser may reduce dryness and make scale feel more comfortable, but it does not control the underlying immune process or replace a treatment plan.
- Avoidable irritation matters: Do not aggressively lift scale or use high-strength keratolytics widely. Coal tar, salicylic acid and steroid products have specific directions and are not ordinary moisturisers.
The three basic moisturiser jobs
Humectants such as glycerin attract water into the outer layer. Emollients smooth gaps between surface cells. Occlusives such as petrolatum reduce evaporation.
For psoriasis, the balance matters more than one ingredient in isolation. Heavy creams and ointments help seal water in. Urea, lactic acid or salicylic acid may soften scale in suitable areas, but strength, body site and total area matter.
- Humectants: glycerin and hyaluronic acid
- Emollients and barrier lipids: fatty alcohols, squalane and ceramides
- Occlusives: petrolatum, mineral oil and dimethicone
When an active ingredient changes the brief
An exfoliating or treatment-led ingredient is not simply a stronger moisturiser. Do not aggressively lift scale or use high-strength keratolytics widely. Coal tar, salicylic acid and steroid products have specific directions and are not ordinary moisturisers.
Check concentration, application site and frequency. Stop when an active causes persistent burning, rawness or worsening redness.
Fragrance-free, unscented and hypoallergenic
Fragrance-free is generally more useful than unscented for reactive or inflamed skin because unscented products may contain masking fragrance.
Hypoallergenic is not a guarantee. Personal history, patch testing and a stable routine provide more useful evidence.
Turn the label into a shortlist
Start with body area, dryness level and desired finish, then look for a coherent formula. Use a fragrance-free cream or ointment every day, especially after washing. Apply prescribed products exactly as directed and ask how to space them from moisturiser.
Reject any candidate that conflicts with this safety context: Dermatology review is particularly important for extensive disease, significant pain, nail changes, treatment failure or joint pain and stiffness.
Common questions,
carefully answered.
What is the best single ingredient for psoriasis?+
There is no universal winner. A balanced, tolerated formula and appropriate texture matter more than a single highlighted ingredient.
Does fragrance-free mean a product cannot irritate?+
No. It removes one common source of exposure, but preservatives, botanicals and other ingredients can still cause individual reactions.
Are natural oils enough?+
An oil can reduce water loss and soften skin, but it does not add water. Many people get more complete support from a balanced cream or an oil layered over damp moisturised skin.
How this guide was prepared
This educational guide uses authoritative dermatology and health information. It does not diagnose a condition or replace personalised medical advice.
Published 28 January 2025. Last updated 30 October 2025. Product recommendations describe moisturising roles, not treatment outcomes.