The dorsal (upper) surface of the bullfrog has an olive-green basal color, either plain or with a mottling and banding of grayish-brown. The ventral (under) surface is off-white blotched with yellow or gray. There is often a marked contrast in color between the green upper lip and the pale lower lip.
You can get the most Vitamin C from citrus fruits, red and green peppers, cauliflower and tomato. Vitamins B2, B5 and B12 are all essential for healthy skin and promoting skin cell growth. Another B Vitamin which is vital for hair and nail health is biotin.
Biotin is a popular supplement for hair, skin, and fingernails, though there is little evidence to suggest that taking biotin supplements can stop hair loss or stimulate hair or nail growth. Similarly, using biotin shampoo or other hair products is unlikely to produce any benefit.: Biotin is a water soluble B-vitamin (B7). It is essential for good nail and hair growth. Biotin is involved the biochemical metabolism of proteins, carbohydrates and fats into energy. It also plays a part in the synthesis of fatty acids.