Image imported from derpibooru 
Original Description:
 
Another one of my edits. Enjoy to those with similar tastes to myself.
 

 
After arriving home, Rarity went upstairs to try to unwind. She enters her bathroom and approaches her bathtub. Once the water was at the perfect temperature and the drain was stopped up, she reached into the paper bag she got from a local apothecary. A slender glass bottle is removed, the label reading Lavender Ripples
 
“Hah, I hope this soak is as nice as the clerk made it out to be,” she comments as the cork is popped out. She pours the whole bottle into the bath, noting the oddly viscous consistency, and sets the bottle down beside the tub. Soon the bath is filled, and the faucet is stopped. She disrobes, puts a towel in the holder, and enters the tub. She moans as the heat surrounds her until she’s fully submerged.
 
“Ooooh… this new bath soak feels simply divine!” Rarity closes her eyes as the relaxing scent fills her mind with present thoughts. Meanwhile, a figure begins to rise from the water. Rarity doesn’t notice immediately; still relaxing as the figure “stands” in the water and approaches Rarity’s face.
 
“Thanks!” The figure responds to Rarity’s comment, “You feel really good inside me too!” Rarity opens her eyes and is extremely shocked to see a girl seemingly made from her bathwater. The “slime girl” smiles and waves at her partner, wrapping her wet, yet soft, tendrils around Rarity’s hands and horn. The bathroom was quiet only for a moment more before Rarity screamed.
 
“AAAH” Rarityis mixed with emotions: fear, disgust, worry, and above all else: anger. Rarity reaches forward, the creature forming around her as she reaches down into the water. The drain plug was pulled out with a swift tug, and the water began to swiftly empty.
 
“Hey wait…what are doy doing? No! Don’t drain the tub!” The creature panics. She feels herself begin to get sucked down as Rarity leans back.
 
“GET OUT OF MY BATH!” Rarity scolds the creature, letting the stopper dangle over the end of the bath. She stares into the cyan eyes staring back at her as the creature continues to plea. She tries to grab the plug to no avail, her body and tentacles getting sucked down, The plughole gurgling in protest as it struggles to empty the bath. Moments pass as the creature ebbs down, continuing to barter and beg for freedom from the drain.
 
“NO! PLEASE! STOP!” Only tentacles remain as the last bit of water circles the drain, swiftly swirling down with the last of the lavender bath soak. The drain gurgles a final time, and all is quiet, leaving Rarity to her thoughts. She looks down at the empty tub and sighs.
 
“Well…so much for my bath soak…” Rarity pouts. That’s the last time she goes to try any strange products from local shops before checking product reviews online.
 

 
Original comic by CyberSquirrel, edited by Mega-Spark