The only thing that is proven to increase breast size (apart from weight gain and implants) is Oestrogen. As this is a female hormone it is unlikely to be found in ejaculate.
However, if you were to lick a pussy or two you might find that has an effect.
Fortunately, semen does contain a substance (very similar to albumen) which does have skin rejuvenating properties. For maximum effect it should be rubbed into the skin. It has begun to be absorbed when it changes from slippy to sticky so a quick spray and wipe off is insufficient.
I hope this helps.