Welcome and thanks for posting your query to HCM.
I can understand the anxiety
related to problem of hair growth on upper lip
in you. Now you want to use Elyn cream along with threading. Elyn cream contains the Eflornithine
which is a irreversible inhibitor of enzyme known as ornithine decarboxylase (plays an important role in cell division and proliferation in the hair follicle). It is the actually the only topical treatment that slows the growth of facial hair. So there is a yes to the cream but you have to apply it for long period of time to see the result.
According to you, threading is done once weekly- which is actually a reason for coarseness of hair growth. So I recommend you to kindly stop threading and can go for the latest laser
hair reduction process by a dermatologist
. For upper lips it would be a cheaper option if you compare it for long period of time with threading. The cream will also be very much effective if used in combination with laser.
Hope this information may help you. With best wishes for your skin,
Dr Sanjay K Kanodia