| Topical corticosteroids | InexpensiveEasy to apply at homeCan be used for large areasPainless | Poor data to support efficacyPotential for skin atrophy |
| Intralesional corticosteroids | Can quickly re-grow hairFairly reliable efficacy | PainfulUseful for only limited areasPotential for skin atrophy |
| Contact sensitisation (eg, with squaric acid) | Good evidence for efficacyPainlessCan be used for large areas | Potential for itchy reactionNot an approved medicationHigh relapse rate |
| Systemic corticosteroids | Can be used for large areasPainlessPossible efficacy | Potential for serious adverse effects |