Are there actually differences in active ingrediants in the various
Crest Toothpastes...Does the whitening formula differ from the
rejuvianting effects one?

Hello Williamstern,


Yes, there are slight differences in the active ingredients in various
Crest Toothpastes.


What is in Crest Whitening Expressions that whitens teeth? 

"Crest Whitening Expressions contains two ingredients that help whiten
teeth by removing surface stains with regular brushing. These two
ingredients are silica and sodium pyrophosphate."

http://crest.custhelp.com/cgi-bin/crest.cfg/php/enduser/std_adp.php?p_faqid=3681&p_created=1062522921&p_sid=kQioCqci&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTgmcF9wcm9kcz0yMyZwX2NhdHM9MTIyJnBfcHY9MS4yMzsyLnUwJnBfY3Y9MS4xMjI7Mi51MCZwX3BhZ2U9MQ**&p_li=&p_topview=1


What is tetrasodium pyrophosphate & disodium pyrophosphate? 

"Tetrasodium pyrophosphate and disodium pyrophosphate are the
anti-tartar ingredients in Crest Whitening Expressions. They are
normal components of human body fluids, are used in many foods, and
they have a GRAS (Generally Recognized as Safe) rating from the FDA.
These ingredients prevent the formation of crystals that can
eventually become tartar."

http://crest.custhelp.com/cgi-bin/crest.cfg/php/enduser/std_adp.php?p_faqid=3676&p_created=1062183336&p_sid=kQioCqci&p_lva=3681&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9MTgmcF9wcm9kcz0yMyZwX2NhdHM9MTIyJnBfcHY9MS4yMzsyLnUwJnBfY3Y9MS4xMjI7Mi51MCZwX3BhZ2U9MQ**&p_li=&p_topview=1


Crest provides material safety data sheets where you may compare the
list of ingredients in each product.
http://www.pg.com/company/our_commitment/msds/health.jhtml


MATERIAL SAFETY DATA SHEETS

NAME: Crest Rejuvenating Effects Toothpaste/Liquid Gels
http://www.pg.com/content/pdf/01_about_pg/msds/health_care/oral_care/Crest_Rejuvenating_Effects.PDF

NAME: Crest Whitening Expressions Toothpastes
http://www.pg.com/content/pdf/01_about_pg/msds/health_care/oral_care/Crest_Whitening_Expressions_Pastes.pdf

NAME: Crest Dual Action Whitening Cool Mint and Fresh Mint Toothpastes
http://www.pg.com/content/pdf/01_about_pg/msds/health_care/oral_care/Crest_-Dual_Action_Whitening.PDF

NAME: Crest Tartar Protection Whitening Cool Mint Paste
http://www.pg.com/content/pdf/01_about_pg/msds/health_care/oral_care/Crest_Tartar_Protection_Whitening.pdf

NAME: Crest Whitening Plus Scope Toothpastes/Liquid Gels
http://www.pg.com/content/pdf/01_about_pg/msds/health_care/oral_care/Crest_Whitening_Plus_Scope_Toothpastes.pdf;jsessionid=1VQXQTOP3LBGVQFIAJ4S0JGAVABHOLKM


Search terms.
Crest whitening rejuvenation ingredients
MSDS Crest


I hope the information provided is helpful!


Best regards, 
Bobbie7

Thanks for your help.....Do you think that it actually works??

Silica sounds so much better than sand, doesn't it?