I've developed an itchy face ears mouth, can I take fexofenadine and loratadine together for faster results?

Yes but. You can use them together but they're practically identical so i don't know that you'll get much mileage out of the combination. You'd do better to use a second, different medicine with the antihistamine like a topical steroid cream. Or for really awful cases, an oral (or im) steroid. (you'd need to see your doc for that). If the itch is due to fungal infection, it must be addressed.