[margaritaville]

To know if it is safe to use on a daily basis, you would have to know what the pH is. Normal skin has a pH level of 4.0 to 6.0 (5.5 most normal range). Soap outside of this range changes the acid mantle of the skin allowing and/or causing damage. Generally exfoliators are outside this range as they remove the dead outer layer of the skin. The only way to find out what the pH is is to litmus test it or call the company and ask. If way outside the range I wouldn't use it on a daily basis. In general liquid cleaners are closer to normal pH than bar soaps. Below is a list of some:
AHAVA Soaps 5.5
Alpha Hydrox Foaming Face Wash 6.1-6.5
Alpha Hydrox Optimum Series Moisturizing Cleanser 6.3-6.5
Beauty Without Cruelty Vitamin C Cleanser 6.0-6.5
Burt’s Bees Tomato, Carrot, and Lettuce soaps 10
Camay Soap 9.5
Camocare Gold Light Foaming Cleanser 6.5-7.0
Cellex-C Betaplex Cleanser 5.0-5.5
Cetaphil cleanser 6.7
Dermalogica Exfoliants: 3.4-3.9
Dermalogica The Bar 5.5
Dermalogica Dermal Clay Cleanser 6.2
Dial Soap (liquid and bar) 9.5
Dove Bar, Baby Dove Bar 7
Dr. Bonner Liquid Soaps 8
Earth Science Clarifying Facial Wash 5.0-5.5
Earth Science ADE Creamy Cleanser 5
Earth Science Apricot Facial Scrub Cream 5
Earth Science Aloe-Gel Cleanser Liquid 5
Ecco Bella Normal/Oily Cleanser 6.5-7.0
GlyTone Mild Cream Wash 3.4%GA, 3.5
GlyTone Mild Gel Wash 4.7% GA, 3.8
GlyTone Wipe Away Cleanser 7.8% GA, 3.8
Irish Spring Soap 9.5
Ivory Soap 9.5
Jevelle Magick Clear Gentle Apricot Scrub 5
Johnson & Johnson Head to Toe Baby Wash 6.5-7.0
Johnson & Johnson 5.5 5.5
Lever 2000 9
MD Forte Cleansers pH 3.8
MD Forte Facial Cleanser II 15%GA 3.8
MD Formulations Sensitive Skin Cleanser 4.4
MD Formulations Basic Facial Cleanser 5.5
MD Formulations Oily/Problem Cleanser 3.8
Neutrogena Deep Clean Facial Cleanser 3.8-4.6
Neutrogena Deep Clean Cream Cleanser 2.8-3.8
Neutrogena Deep Clean Cleansing Cloths N/A
Neutrogena Extra Gentle Cleanser 5.6-6.2
Neutrogena Extra Gentle Cleansing Bar 6.0-7.5
Neutrogena Facial Cleansing Bar Original Formula 8.7-9.2
Neutrogena Fresh Foaming Cleanser 6.2-6.9
Liquid Neutrogena 8.7-9.1
Neutrogena Pore Refining Cleanser 3.7-4.2
Neutrogena Cleansing Bar for Acne-Prone Skin 8.7-9.2
Neutrogena Oil-Free Acne Wash 3.6-4.4
Neutrogena Oil-Free Acne Wash Cream Cleanser 3.6-4.4
Neutrogena Oil-Free Acne Wash Foam Cleanser 3.5-4.2
Nutribiotic Non-soap skin cleansers 5.3-5.7
Olay Foaming Face Wash - 6.85-7.36
Olay Foaming Face Wash - Sensitive Skin 6.6 - 7.35
Olay Emollient Cleansing Lotion 6.0 - 7.2
Olay ADS Daily Renewal Cleanser 2.9 - 3.25
Olay ProVital Revitalizing Cleanser 2.9 - 3.25
Olay Daily Facials Normal/Dry 6.9 (when wet)
Olay Daily Facials Normal/Oily 7.6 (when wet)
Palmolive soap 10
Paula’s Choice (all formulations) 5.5
Physician's Choice pHaze1: Facial Wash 5%AHA 6
Physician's Choice pHaze1: Facial Wash oily/problem 7%AHA 5
Purpose Facial Cleanser 6.5-7.0