i have been taking Puritian's Pride Hydrolyzed Collagen for the past 6 months and trust me it has thickened my hair back to where it was.
From Puritan's Pride
http://www.puritan.com/collagen-512/hydrolyzed-collagen-plus-c-004596#siblings
Product #004596
HYDROLYZED COLLAGEN PLUS C (180 Tablets) Restore Strength and Flexability to Hair, Skin and Nails This 100% pure collagen protein supplement provides the major building materials for growth and maintenance of nails, hair and skin. Collagen is also an essential component of muscles, tendons, cartilage and teeth.
Buy 1 Get 2 Free Only $19.99 For 3
Buy 2 Get 4 Free Only $39.98 For 6
Supplement Facts
Serving Size 3 Tablets
Servings Per Container 60
Amount Per Serving % Daily Value
Vitamin C 30 mg 50%
(as Ascorbyl Palmitate)
Sodium 25 mg 1%
Hydrolyzed Collagen 3,000 mg (3g) *
L-Ornithine 45 mg *
*Daily Value not established.
DIRECTIONS: For adults, take
three (3) tablets twice daily on an empty stomach. As a reminder, discuss the supplements and medications you take with your health care providers.
Other Ingredients: Cellulose (Plant Origin), Dicalcium Phosphate, Croscarmellose, Silica, Vegetable Stearic Acid, Vegetable Magnesium Stearate, Cellulose Coating, Glycerin. Coated for ease of swallowing
I just hate that these are the biggest pills they have size wise. Between this, my Super-Biotin and Silica it has helped my hair with thickness and softness.