Hi,
Syringomas are incomplete ductal tumors located in the dermis.
As such, they cannot be removed by creams.
They are removed by ablative therapies such as electrocautery, CO2 laser. Such therapies actually destroy the collection of incomplete ductal components causing the skin bumps of syringomas.
An experienced doctor is required to perform such procedures as scarring is possible from ablative treatments.
Hope this helps!