Never had any trouble with valves or anything (since you blow air into your valve).
Modified sealants - if they work - cannot be installed through the valve core or even the valve stem.
Yeah you put the glitter in when you install your tyres. From there on no issues with valves or anything. Just like the YouTube video
@Jaap started
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Modified sealants - if they work - cannot be installed through the valve core or even the valve stem.