Cosmetics Formulation Development

Purpose, age 40, strong teeth, see a doctor every year, no tooth decay, sensitive teeth, smoke, drink a lot of coffee, yellow teeth

Want to have one , helps teeth remain strong, does not cause tooth decay, reduces tooth sensitivity and whitens.

Teeth whitening ( Carbamide Peroxide (Gel) will be used to whiten teeth 2 times a week, but it will make the teeth thin like the brand that is sold in the market) how to use is 100% can be applied directly, right? After leaving it for 30 minutes, spit the gel off. or must use water to gargle

- Carbamide Peroxide (Gel) should be used for how many days apart.

- Apply on the surface of the teeth, leave for 30 minutes, then spit out the gel. or must use water to gargle with water for daily oral care

Will make a formula to take care of teeth to be strong, enamel, prevent tooth decay and reduce tooth sensitivity.

Inquire about oral substances, are there any mechanisms that overlap?

1. Hydroxyapatite restores tooth surface, is it considered to help strengthen tooth enamel? Prevent tooth decay?

2. Stannous fluoride reduces tooth sensitivity. But does it prevent tooth decay like sodium fluoride does?

Then the Sodium Monofluorophosphate strong enamel Can you help me with anything else?

Which substances cover the most needs? or which mechanism is redundant Help me cut it out.

thank you

another story

Desire: want to make body powder, matt texture, don't want to put talc Apply to soft, smooth skin, adhere well to the skin, not sticky when sweating.

Now use baby powder. But I don't want to use it because it has talc as an ingredient. Is there any base powder that can be used 100% instead of talc?

Price budget, 30% more expensive than normal baby powder that can put talc

For example , Aluminum Starch Octenylsuccinate can apply 100% right?

Or if you have to mix multiple powder bases, we can use Mica Powder (10 Micron, Matte, Silane Coated) as a base powder, mix Aluminum Starch Octenylsuccinate in equal proportions or maybe add Allantoin as well.

Can perfume be put in the powder? What should I do? I don't know anything about flour, thanks.