Triphaladi tailam is a herbal oil formulation.
Its usage:        

1. For external application in case of grey hair, spilt hair, hair fall.
   
2. In rhinitis, sinusitis, headache.
3. It is used in diseases of neck, throat, ear and eyes.

Effect on tridoshas:balances vata, pitta and kapha.
How to use?
External application on scalp , or as shirodhara.
Triphaladi tailam ingredients:
Triphala-Haritaki, vibhitaki, amla.
amrutavalli
asanaka
bala
eranda
Indravalli
Water for decoction
tekraj swarasa
hatha swarasa
taila-sesame oil/coconut oil
ksheera-cow's milk
fine powders of each of
kushta
yasthyahva
padmaka
usheera
rakta chandana
ela, patra, mamsi
hayagndha
bala, amrutha
sariva
amarakashta
lavanga
nata, choraka
shweta kamala
rakta kamala
kalhara, padma,
anjana,neeli
Reference: sahasrayoga.