She has white Afro Hair, despite her successful career she despite the idea of aging and he's secretly working on an anti-age serum but it's still incomplete.
Until she was contacted by Derpy to analyze some evidence she gathered against Celestia and the apple family.
At the beginning she found nothing until she manage to isolate the bimbo magic in a molecular form.
After many experiment she notice it different potential application. It's now she decide to use it to complete her anti-age serum

It works the formula is completed.It only needs to be tested. But the impatient chemist ignore the safety procedure and injected herself with the serum. And it works kinda.
The doctor feels her body gets hot her natural white Afro grows bigger and gets black strip of hair. Her lips swelled and painted with a permanent black lipstick. Permanent black eye shadow and eye liner appears around her eyes. Nails grow longer and well manicured with permanent black nail polish.

Growing boobs, widening hips, expanding ass and thicker thigh popped some button and torn her clothing. The doctor doesn't care because she was sexy as fuck

Zecora was grateful to Derpy and sent her result by mail but never mention about what she did.

Now the doctor wants to enjoy every bit of her formula. After many day with multiple encounter. The doctor even if food taste still good they were less tasty than semen. Her body was emitting pheromones thus making seduction easier. Her skin was secreting mucus that gives her a flawless skin. She discovered when she holds a dick her hand was naturally sweating a lubricant that stimulate sperm production.

Her breasts sagged less due to her enhanced skin elasticity and was filling with milk. The milk has aphrodisiac properties and whoever drink it show sign of bimbofication

Zecora has other thing to worry about her pussy fattened and was constantly lubricating and begging for attention.

Black tribal tattoo started to appear on her body, as she grow taller and curvier. Getting more and more attention where she goes.

"What's happening to me ?" asked the worried doctor

Many days had passed, the chemist secluded herself in her lab working on a cure. She was naked, she was sweating so much than her clothes become sticky. Food and Water had no taste. Her production of pheromone was so strong it can be seen from the naked eye, Men start to gather around he building like mindless zombies.

Zecora's pussy was tingling at the view at the sea of men from her monitor. No cheap plastic toys will quench her growing lust only the real deal can do that.

Zecora knew what they would do to her if she let them in. The chemist shook her head and focused on her cure. Just a few minutes and everything would go back to normal.

After few hours of Masturbation the formula was done. The doctor holds the vial in her hand. "Will it work this time? I need more testing!" The sounds of the hitting on her security door interrupted her thought. She sighed "Well Zecora is now or never. There will be no second chance."

Zecora drank the liquid in one gulp. Her mind went blank as she entered in a trance like state.

The door of the lab open, dense pink cloud engulf the mindless fuck zombies who started to tear apart their pants before the closest to the entrance rushed inside the building. They were greeted by white with black stripes with a pussy at the tip swallow their swollen manhood and sucked them dried.

The Zombies moaned and collapsed after having their balls emptied other tentacles emerged and started to milk the other Zombies.

A feminine moaned echoed inside the building as the sound of clacking heels gets closer.

A tall white ivory-skinned hyper-feminine figure with a gigantic white Afro with black strip where where zebra like striped tentacles where emerging, was walking towards the hordes of fuck zombies swinging her hips in and hypnotic way while her bouncing gigantic udders was leaking milk.

It was obvious she was the source of the pink gas. Her plumps lips open letting her arm lenght tongue to stick out.

The non drained started to rushed but was caught quickly by the pussy tentacles catch them.

The one who manage to get closer didn't get intimidate by the fact she was towering them and jump on her like starving beast.

The huge female creature fell on the ground in a loud slam, creating a crater the shape of her hefty asset.

A lucky fuck zombie manage to put sis swollen and hard dick between inside the plump and wet neither lips and blow all his load from the initial penetration.

He was quickly tossed a way by a bulkier one. This one had drink the white sweet nectar from thumb size dark brown nipple. It last longer than the previous one but after a few thrust he blow all his load. Another who drank more milk took his place. And thing goes on the zombie that succeed the previous one was bigger than his predecessor.

The same scene was repeated for her mouth too. Smaller zombie went to the mouth thinking to avoid their bigger congeners but was quickly disposed after they blow their load by a stronger one.

A natural selection was occurring, the one who outrun the pussy tentacles must suck the nipples to grow stronger to take the place of their predecessor.

The cycle repeat all the night until the last zombie was sucked to his last drop.

At the first light of the sun, Zecora awake her body covered of cum. The scientist walk among the sleeping men and get back to her lab.

She notice she gets a mail on her computer. It was from one of her former students. She was very gifted but a bit reckless. She has lost an arm after one of her experiment went awry but like Zecora liked to say "No pain no gain."

The doctor contacted her to get some help to find a cure. She was surprised her former student answered her so quickly and with a fix to the formula. She wrote on her message she worked on something similar a few days ago it was easier to her to fix it.

Zecora opened the mail. It was written "Do you like the fix?"
The doctor taped her answer. "Thanks for the treat, now I have a supply of meat. Semen tastes good and it's my only food. Sends me men by truck, because I'm sexy as fuck. I'm on my way to meet you, it will be a pleasure to with you. Since you take me on your bus and make me a succubus.