5ace248d_hitening_Systems_Dentist_sell___3
[0] Safety [1] The mouth piece is custom fitted to your teeth keeping the gel away from your gums. All procedures and products are professional products. [2] The mouth piece is custom fitted to your teeth keeping the gel away from your gums. All procedures and products are professional products. (Same procedures & products used by dentist.) [3] 
The mouth piece is not custom fitted to your teeth and does allow the gel to come in contact with the gums , allowing the gel to eat away the gums. None of the procedures & products are not professional products.
FAQ about Teeth Whitening Systems Dentist sell.
3