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Topical cosmetic. Cysteamine 5% cream is typically applied once daily to areas of melasma as a short-contact treatment (left on for ~15 minutes, then washed off) to limit odor and irritation, with daily sunscreen. There is no oral or systemic use in this context. This library does not provide an ingestion protocol.

Any time

Cysteamine 5% cream (short-contact application)

Topical cosmetic only. Kojic acid is typically used at roughly 1-2% in leave-on serums or creams (or as the more stable kojic acid dipalmitate), applied to areas of hyperpigmentation once or twice daily, often alongside other brighteners and daily sunscreen. There is no oral, injectable, or systemic dose — it is not ingested. This library does not provide an ingestion protocol.

Any time

Leave-on topical serum or cream (≈1-2% kojic acid, or kojic acid dipalmitate)

• For topical (skin) use only — not for ingestion, not for injection
• Known allergy/sensitivity to cysteamine
• Application to broken, irritated, or sunburned skin until healed

• Other irritating actives (acids, retinoids)

• For topical (skin) use only — not for ingestion, not for injection
• Known allergy or sensitivity to kojic acid
• Application to broken, irritated, or compromised skin until healed

• Other leave-on actives (acids, retinoids, hydroquinone)