Paul had put the vials in his pocket and was curious about them but was careful for the moment. On his way down the street in his neighborhood he saw some kids playing a little baseball in the road and then one of the kids hit the ball hard and a tad low to where the ball slammed into Paul's leg right where the vials were. Paul knelt down for a second and looked in his pocket to see that the vials hadn't even been scratched although the cork for the blue one had came out and some of the blue liquid had came out. Paul's jeans had been soaked a bit with the blue liquid and now his left and right hands had gotten some on them while corking the bottle again. The kids were just looking and Paul grabbed the ball and threw it back and went back to his house. He didn't notice anything odd while walking home but when he got to his front door he noticed he felt a tad lower next to it and when reaching into his pocket it felt a tad more snug. Concerned he went into his house, took off his shoes, and then went upstairs into his bathroom.
Paul's bathroom was nice, clean, and white tiled with a sink, toilet, and tub/shower. He took out the vials and put them on the counter. He then took off his once somewhat soaked jeans and noticed that his legs had changed quite a bit. They looked thinner and had less body hair on them, and then looked further up and noticed his thighs were a bit thicker, and then noticed his crotch seemed flat. He took off his underwear and saw that his dick was gone and had left a vagina in it's place. Paul then looked at his hands and noticed that the hair on them had vanished and were smaller and more delicate and still were rather damp with that blue stuff. Heck his jeans were still damp and his legs felt slightly wet as well. Paul thought to himself "That blue stuff is turning me into a girl... and it doesn't seem like it was changing my clothes..." he went to the tub and prepared a warm bath and thought "either it'll dilute this stuff to the point where it does nothing" then took a dip in the tub and enjoyed the nice warmth of the water on his body. Then looked at his hands and then noticed the blue liquid come off and... spread? The blue liquid spread and seemed to be taking over the water quick.
Paul rose out of the water but his body had already been coated in the blue liquid. Paul's already fairly feminine legs got a little longer and softer, and his hips and ass stretched and plumped a little. Then his waist started to shrink in as chest started gaining flesh turning into B-cups. He couldn't see his feet in the water and decided to get out and when he did he noticed his feet were rather dainty. Paul noted that the liquid definitely didn't have any odd smell to it. Paul noticed that while some of the blue liquid ended up spilling on the floor to no effect her breasts that were damp seemed to be getting a bit bigger still. Paul thought to herself "Well i'm a girl... That's not terrible... the real problem is figuring out how to neutralize the blue woman liquid..." She looked at the vial which looked a little empty and then refilled it with the tub liquid. She sighed and then took a towel and dried herself off, the floor off, and then took the damp towel and her old clothes and tossed the wet things in the tub. either she could neutralize everything about that stuff and be left with some damp clothes and towel or just some clothes/towel/bathwater she couldn't let out into the wild.
She then looked at the vials thinking there was something in one of them that may neutralize the blue liquid. Paul then decided too...