One detractor, @Jenks_1993, wrote: "Why the f*** would you get the word vegan written on your face in big letters?"
Another critic, @LFC413 surmised: "That tattoo is gonna look fantastic when she turns 70"
Bullen remained defiant though, posting a strap across the image explaining her motivation, saying: "so I don't have to tell people I'm vegan every five minutes."
She explained to Lad Bible that she wanted people to see how passionate she was about her diet choices.
"I chose to get this tattoo as I'm incredibly passionate about veganism and know I'll be vegan for life.
"Of course the tattoo on my face received quite a lot of negative reactions because people seem to get upset when they see the word 'vegan'."
And on the suggestions that the word may put off future employers, Bullen hit back: 'I've had a lot of comments saying I'm unemployable which doesn't matter to me since I've been self-employed since I was 18 and it's easy to cover with make up and a fringe.'
She added: "I primarily went vegan a few years ago because of empathy for the animals, and I'm still learning about how eating meat is so harmful for the planet and contributing towards world hunger and so many illnesses in humans."
Elsewhere, lots of people defended Bullen's right to choose what she puts on her face.
On Facebook, Bridiñ Caira Anita Flynn wrote: "I think its good. People have the right to express what they believe in in any way."
And her tattoo artist, Jordan McCrea, also took to social media to defend her client's choice of body art after being bombarded with a slew of critical comments.
She said: "I really respect her for fighting for what she believes in and being proud to show it off. "
McCrea slammed those who passed negative comment, saying: "Who is anyone to take the p*** out of what someone chooses to eat, never mind their reasons or what they do to show they're proud of it."
