A2 I.e, Desi Ghee typically referes to ghee prepared from home made butter & also from Indian original breed cow's milk , Which is free from toxins & induced harmone residues. Rich in natural vitamins & nutrients. Especially it is very good for infants & children as it improves digestion, gives healthy fat & glowing skin.
So you can use happily healthy & nutritious A2 ghee.
Next Steps
Consult me for proper Deha prakriti assessment of the person as you mentioned thin.
Health Tips
If you want to use in general for nourishment Use a spoon of A2 ghee with a pinch of salt twice or thrice daily for a thin person.