Is the date on gel the manufacturer date or expiration date?

Good question, I don't know for sure but I would imagine it would be the expiration date as the 'best before' on food products. I always make sure I use the whole tube before the expiration date then you're getting the full benefit & strength from the whitening effect

what is it that makes your teeth white?

I don't know but it really works with no sensitivity. I have used this product for years with no adverse effects. My teeth are really white and I am 70 yrs old..!!

ASIN	B0010DQA5K
ASIN	B0010DQA5K
Best Sellers Rank	#229,076 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #3,260 in Toothpastes
Country of Origin	USA
Country of Origin	USA
Date First Available	25 August 2012
Included Components	Teeth Whitening Gel
Included Components	Teeth Whitening Gel
Is Discontinued By Manufacturer	No
Item Weight	32 g
Item Weight	32 g
Item part number	COMINE5013901
Item part number	COMINE5013901
Manufacturer	Southern Dental Industries
Manufacturer	Southern Dental Industries
Net Quantity	4.00 Count
Net Quantity	4.00 Count
Package Dimensions	13.21 x 8.89 x 2.69 cm; 32 g
Package Dimensions	13.21 x 8.89 x 2.69 cm; 32 g

Pola Night Spearmint 22% 4pk (4 Gels)

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