A deep conditioner is a type of mask used for moisture, has a slightly thinner consistency, and doesn't penetrate the shaft.

Recently, I've been seeing an overnight collagen face mask, the Biodance Bio-Collagen Real Deep Mask ($16) for four, all over my social media feeds — both TikTok and Instagram alike.

Beauty writer Carol Lee tested the Biodance Bio-Collagen Real Deep Mask to see if it was actually worth the hype. Read about her experience here.

BIODANCE Bio-Collagen Real Deep Mask. $19 at Amazon. $69 $8 at ballagrio.com. How I Tested The Mask. To fully put the mask to the test, I wore it to bed for a few nights in a row.

Biodance Bio-Collagen Real Deep Mask. This mask stayed on just fine, but the results were disappointing. $19 from Amazon. Back to top. The mask was easy to apply.

Enter my new miracle product: The La Mer Deep Purifying Mask is composed of a proprietary Pretoxifying Ferment. It’s a 99% naturally derived ingredient containing bamboo charcoal, sea salt, and ...

I thought sleeping with a full sheet mask on sounded sticky and kind of excessive, but the Biodance Bio-Collagen Real Deep Mask garnered enough hype to catch my eye. I'm intrigued.