Both Betnovate and Betacap are available as scalp applications. They both contain betamethasone valerate as their active ingredient and can be used to treat the same scalp conditions. Both Betacap and Betnovate are prescription-only medicines (POMs) and should be applied twice a day. Betnovate should not be used by adults for longer than 10 days. Children must not use it for longer than 5 days.