Table 4.

Nondrug therapies for alopecia.

Treatment	Mechanism	Application	Ref.
Hair transplantation	Replaces old with new HF	AGA	[175]
LLLT	Stimulates HF and stem cells, protects HF from dying	AGA, AA, CIA	[176]
Platelet rich plasma	Mixed growth factors in dalteparin and protamine microparticles	AGA	[177]
Follicular neogenesis	Dissociated epidermal and dermal cells in suspension reconstitute on a matrix	AGA	[178]
Fractional laser	Induction of thermal micro-wounds stimulates HF	AGA	[124]
Inductive cell therapy	Use spheroids of dermal papilla cells	AGA	[179]
Stem cells	Skin derived progenitor cells	AGA	[180]

AA: Alopecia areata; AGA: Androgenic alopecia; CIA: Chemotherapy-induced alopecia; HF: Hair follicle; LLLT: Low-level laser (light) therapy.