Posts Tagged ‘Aging Skin’
Skin aging is a process that affects the skin and internal organs, it is a progressive deterioration of functions of the skin at the molecular level that ends in cell death.
There are two causes of aging skin, skin that is intrinsic consequence of aging is associated with a decrease in the protective capacity of the skin and response to stimuli, and extrinsic aging is due to external factors like the sun, pollution and snuff, the first being the most aggressive and which produces photo-aging.
Intrinsic aging is characterized by distinctive features that differentiate it from a youthful, namely:
• Dry, pale and fine wrinkles
• Loss of elasticity
• Flattening cell junctional
• Reduced number of Langerhans cells and melanocytes
• Keratinocytes flattened and loosely adherent corneocytes
• Decrease in the stratum corneum hydration
• Loss of fibroblast
• Changes in the quantity and quality of collagen
• Increased production of free radicals that alter DNA repair as a result giving the photoaging
• Senile Angiomas
• Seborrheic Keratosis
For its part, the photo-aging is sun damage that accumulates over time, has the distinction of generating these alterations in the skin:
• Fine wrinkles that turn into deep grooves over time
• Spots
• Dryness
• Loss of tone
• Yellowing
• lentigines
• Ephelides
• Appearance stiff
• Decreased wound healing
• Telangestasias
• skin fragility
• Increase your chances of getting skin cancer pre-
These consequences depend on the amount of sun exposure you have had skin and skin biotype as the most sensitive skin to the problem are the clearest, who have lifestyles outdoors and living in sunny climates.
The sun’s UV radiation significantly affects keratinocytes, melanocytes and fibroblasts, causing age spots and solar lentigines that can become malignant.
Involutional skin shows noticeable changes in different skin layers. Besides all this, the skin can be distinguished involution two well-defined areas that are older skin hidden and exposed, each with distinctive signs. In older skin dryness occult moderate note, color yellowish-white translucent skin lifting and folding a slow rebound, seborrheic warts ruby nevi.
In older skin exposed can find an extreme dryness, peeling, wrinkles, deep furrows and folds, also a noticeable thinning of the skin and atrophy. Exposed skin has a yellowish opaque sample skin aging, skin rhomboid easy to bending and lifting a rebound too late and there is also hyperpigmented macules, achromic and purple scars, sebaceous hiperplascia, seborrheic warts, actinic keratosis and lentigo maligna.
Involutional skin shows two types of wrinkles: one is deep in areas that are exposed and the stretch will not go away, another surface that is noted in the areas of reduced exposure or decks, which disappears with stretching.
Smoking increases the aging process of the skin and gives more depth to the lines and wrinkles, which are higher relative to the number of packs of cigarettes are smoked annually.
The harmful effects of snuff have two mechanisms of action:
For effects on the vasculature of the dermis and epidermis and an increase of wrinkles perilabiales.
I’m a cosmetology student, I need to do work relating to the behavior of the skin, my question is: why we age? Thanks
Living things need oxygen but its metabolism produces free radicals, which are natural waste. These molecules are highly reactive chemical that oxidizes the cell, as if it were an old iron exposed to the weather. To avoid the proliferation of free radicals have cells that activate antioxidant mechanisms. Over time these mechanisms begin to fail and there are a greater accumulation of free radicals which deteriorate the cell. The most visible consequence is the appearance of wrinkles but it is the same at all levels of our body, so systems are disrupted energy production in cells, causing physical and mental fatigue.