Allantoin

Allantoin is a great skin soothing and conditioning agent. Natural sources of Allantoin are plants like Comfrey and Chamomile, it also occurs in the body naturally. It makes for a great ingredient to be used in skincare.

Hyaluronic Acid

Sodium hyaluronate has a much smaller molecular size than hyaluronic acid so it has a much easier time deeply penetrating the skin. Powerful humectant that attracts and holds on to water, making it the ultimate skin moisturizer. Also protects the skin from irritation & relieves itchy and scaly skin.

Aloe Vera

Acts as a protective layer on epithelial skin level and replenishes its moisture without making it greasy. Possesses high nutritional qualities and antioxidant properties, which help in skin healing. Contains Auxin and Gibberellins which help in wound healing and have anti-inflammatory properties.

Natural Betaine

Acts as a hydrating ingredient that is derived from plant. Natural betaine helps the skin hold on to moisture and adapt itself in situation changes which in turn helps in maintaining skin hydration balance.
References for this information:
The Journal of Chemical Physics, June 2015, ePublication
The American Journal of Clinical Nutrition, September 2004