I doubt it is this... the reason I feel this way is I recently discovered that once you have purchased all three options (each of which is a 1-time purchase) as far as Fantasia is concerned... you won't be able to buy any more Fantasia. So once all your Fantasia Potions are used up again, that's it, no more Fantasia. So I feel that the inclusion of Eye Color change will likely be implemented into the Aesthetician at some point in the future.
