See a gynecologist, urogynecologist or urologist for vaginal botox. Not all of them do it, but doctors from other specialties aren't usually trained in the management of this condition.
Neurotoxins such as Botox have made huge improvements in treatments for vaginismus. The neurotoxin with actual studies is Dysport, but all of them work well. It is important to combine with other modes of therapy to optimize your results. If you have pain due to vaginal dryness, atrophie/cola or...
If you have vaginismus, you will not be able to tolerate anything being inserted into the vagina. Therefore, you will be asleep under IV sedation when the botox injections are administered. This is not the same thing as having botox injected on your face. It's a completely different treatment....
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Everything you need to know about Botox for Vaginismus