Reddit reviews Revlon Extra Long Black Hair Elastics, 16 Count

I would wait about a week before putting them up. To help alleviate the pain I personally apply a few products to my scalp:

I apply aloe vera and let that dry followed by Stay Soft Fro. Then I follow-up with shea butter after letting the spray sit for a minute or two.

I don't think the braids will feel less heavy but you'll get used to it over time.

I would recommend XL Hair Ties or Silk Scrunchies. If your natural hair isn't in the ponytail then you can use a regular scrunchie.

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^(side note: I wasn't able to find a pic of a real regula ol' scrunchy for the life of me)

Hair ties. Hair ties are awesome! All shapes and sizes
https://www.amazon.com/Revlon-Extra-Black-Elastics-count/dp/B01F8SRBXC