I have recently been diagnosed with scalp psoriasis by a dermatologist. I also have dry skin (xerosis tendency), elevated total IgE (>3000 IU/ml), allergic asthma, and a history of skin sensitivity. Current dermatology plan: * Halox-S lotion (halobetasol) for scalp psoriasis * Protar-K (coal tar preparation) as long-term maintenance therapy * Regular moisturization with Cebhydra lotion * pH-balanced syndet cleansers recommended * Avoid harsh soaps, hot water, and prolonged bathing Additional information: * My hair is currently shaved, but it will eventually grow back. * My natural hair is curly/wavy. * My hair becomes dry and frizzy very easily in the hot and humid Indian climate. * I have significant premature greying. * Long-term scalp health is more important than cosmetic appearance, but I would still like a shampoo and conditioner that support healthy hair texture. Please provide an evidence-based review covering: SHAMPOO 1. What characteristics should an ideal long-term maintenance shampoo have for scalp psoriasis patients using Protar-K and topical corticosteroids? 2. Should the ideal maintenance shampoo be sulfate-free, or is that requirement overstated? 3. Which surfactants are preferred for psoriasis-prone and dry scalps? 4. Are fragrance-free shampoos meaningfully preferable in psoriasis patients with elevated IgE and allergic conditions? 5. Is shampoo pH clinically important for scalp psoriasis? 6. Are baby shampoos actually ideal for scalp psoriasis, or is that a misconception? 7. Which ingredients should be avoided for long-term maintenance use? 8. Which ingredients have actual evidence for scalp comfort and barrier preservation? 9. Compare the evidence for: * Sebamed Everyday Shampoo * Sebamed Baby Shampoo * Bioderma Node Fluide * Vanicream Shampoo * CeraVe Shampoo (if available) * Other evidence-based options suitable for psoriasis and dry scalp CONDITIONER 10. For someone with scalp psoriasis but curly, dry, frizzy hair, should conditioner be used regularly? 11. Which conditioner ingredients have the strongest evidence for reducing dryness and frizz without worsening scalp psoriasis? 12. Are silicones beneficial or harmful in this situation? 13. Are oils, butters, protein treatments, or keratin products useful or problematic? 14. Is fragrance-free conditioner preferable for psoriasis patients? 15. Should conditioner be applied only to hair lengths and ends rather than the scalp? PRODUCT RANKING 16. Rank the best shampoos for: * Scalp psoriasis * Dry scalp/xerosis tendency * Elevated IgE/allergic background * Long-term use after Protar-K therapy * Curly/frizzy hair 17. Rank the best conditioners for: * Curly and frizzy hair * Dry hair shafts * Sensitive scalp * Hot and humid Indian climate Please prioritize evidence quality, dermatology guidelines, scalp health, barrier preservation, and long-term safety over marketing claims.