There
are many factors that cause the skin to appear dull. The skin normally
sheds its outer layer and allows a new layer to regenerate once in 27
days (approximately). This cycle gradually slows down with age, excessive
sun exposure, free radical reaction and unhealthy lifestyle. Other aging
accelerating factors are smoking, alcohol and stress. As the cell renewal
cycle slows down the skin eventually loses its radiance and appears dull,
tired and unhealthy. Some of the common
aesthetic conditions that make skin look dull are comedones (blackheads
and whiteheads), large open pores, skin discoloration, rough skin and oily
skin.
Comedones (blackheads /
whiteheads) may appear, giving you the “grainy” feeling, especially over
the “T” zone. Comedones are basically sebum (oil) that is being secreted
by your oil glands to moisturize your skin. This sebum occasionally gets
hardened on exposure to atmosphere and forms into comedones. It is a
natural phenomenon which almost every living individual will experience.
Comedones can also occur due to imbalance between oil secretion and skin
shedding.
Open pores are part of
the pilo sebaceous unit of the skin which helps in delivering the sebum
(oil) secreted by the sebaceous gland to the skin surface.
Uneven skin
discoloration occurs due to excessive sun exposure, slow skin shedding and
as part of the aging process. The most common triggering factor is the
ultraviolet A (UVA) and ultraviolet B (UVB) radiation from the sun. The UV
radiation triggers off a chain reaction within the epidermis and dermis
that stimulates melanocyte formation. The UV radiation from the sun
activates the tyrosinase enzyme, which is one of the major biological
pathway for activation of melanocyte. Applying sunblock will only help to
minimize the harmful effects of sun but does not confer full
protection.