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  Is the SPERTI Worth the Hype? Our In-Depth Test

  Durasi: 6:15

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  Sperti Vitamin D Sunlamp After 6 Months

  Durasi: 1:06

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  DIY UVB tutorial vs Sperti Vitamin D Lamp vs Red Light Therapy

  Durasi: 3:52

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  Are Vitamin D Lamps Better Than Supplements?

  Durasi: 2:04

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  Why I Quit Vitamin D Supplements - Sperti Vitamin D Lamp Review

  Durasi: 2:08

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  Sperti Vitamin D Lamp Review | BEST VITAMIN D LAMP?

  Durasi: 1:09

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  Sperti Vitamin D Sunlamp Customer Review

  Durasi: 1:08

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  Using a vitamin D lamp during winter instead of vitamin D supplements?

  Durasi: 0:36

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  My experience with the Sperti Vitamin D Sunlamp

  Durasi: 1:24

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  Sperti Vitamin D Sunlamp Review and Usage

  Durasi: 4:17