Hello, there:
I am using a transparent background logo for my store using Brooklyn theme, some white spots keep appearing on my logo background.
I made sure that the logo is clean from those white spots, and I am 100% sure that the issue is with Brooklyn theme or Shopify, let’s say.
Please find attached the logo (Without Background), also the link to my store:
https://www.dermaline.store/
This is how it shows up on my store: (Mobile and for Desktop)
Mobile:

Desktop:

Hey @dermaline
There were some white patches on your logo that caused the issue. It happens with me too from time to time, especially with online background remover tools.
Anyway, I used a nice free online tool called Photopea (basically an online Photoshop) to remove the patches. On this video you can see how that cleaned version looks on your site: https://share.getcloudapp.com/d5uNev9J
I attach the file here as well, I hope this helps. 
Thanks a lot, BUT, it didn’t work.
I still have the same issue.
I’m sorry to hear that. May I know how did you try to solve the problem with the new logo?
Hey @dermaline
Could you solve it since then? Do you want me to help with that? (free of charge)
Hi, I uploaded the Background Free logo you created for me.
Unfortunately, it didn’t work for me.
@dermaline
Please add the following CSS code to your assets/timber.scss.liquid bottom of the file.
.header-wrapper--transparent .site-header__logo-image--transparent {
display: none !important;
}
Thanks!
Hey @dermaline
I’ve sent a store access request, but you rejected it. I’m afraid I can’t help you otherwise. I hope you’ll be able to solve it anyway.
Hi David
Ow, sorry! That was you?
I thought it was something else, would you please request a new store access, I would really appreciate your help.
Alright, no problem. I’ve just sent another, let’s try it again. 
Hey @dermaline ,
I’ve updated the logo on your theme, it looks better now.
Cheers.