Hi Senoir Sinco,
yes, at level 2 with 1 point into Master Herbalist you need less ingredients. I'm making a list now of all kind of potions on all levels, but so far it isn't complete
But I can say this, putting 1 point in Master Herbalist(MH) (or wearing that Bracelet I bought by Dr Needleman )
Level 1 potions: nothing changed,
except for a Rejuv. potion :
without a point in MH you need 1 ginseng + 1 earth root
WITH 1 p in MH : only 1 earth root
At level 2 potion ALL changed like this:
Healing, Revit., Str, Dex, Int & Full Resist : just 1 herb. Rej : 1 of each (1 ginseng, 1 earth root)
At level 3 potions (and the same at level 4 and level 5 potions!)
all herbs you first needed 2 of each, now just 1 of each. First 3, now 2 or first 4, now 3 .. so always 1 herb lesser.
If you put 2 points in MH at lower levels (Limited, Minor, Lesser & Moderate), nothing changed. But at higher levels ...