Can I walk in? June 29, 2022 14:48 Updated Based on availability, yes, you may be able to book an appointment in-person on the day-of at select store locations. Related articles How do I make an appointment? Is a new device used for each appointment? Where are the Colgate Teeth Whitening Spas located? Can I use this if I’m pregnant or breastfeeding? How white will my teeth get? Comments 0 comments Please sign in to leave a comment.