Asana Vilwadi Thailam formulated on kerala ayurveda principles.
Its usage:

1. In treating earaches, tinitus.
   
2. Eye pain, infection of eyes.
3. headaches.How to use:

Application over the head or as karna purana(filling in the ear), also as tarpana karma for eyes.
Asanavilwadi enna (Thailam)  ingredients:
Asana – Pterocarpus marsupium
Vilwa – Aegle marmelos
Bala – Sida cordifolia
Amruta – Tinospora cordifolia
Madhuka – Licorice – Glycyrhiza glabra
Nagara – Ginger – Zingiber officinalis
Triphala – Terminalia chebula, Terminalia bellirica, Emblica officinais
Cow Milk
Taila  – Sesame oil or coconut oil
Reference: Sahasrayoga.