Moisturizer or emollient is a complex mixture of chemical agents (often occlusive helps to retain water in the skin after application, humectant pulls moisture and emollients help smooth the skin.) specially designed to create a coating the outer skin (epidermis) is softer and more pliable. They increase skin hydration (water content) by reducing evaporation. Natural lipids and sterols, as well as artificial or natural oils, humectants, emollients, lubricants, etc., Can be part of a commercial skin moisturizing composition. They are usually available as commercial products for cosmetic and therapeutic use, but can also be made at home using common pharmaceutical ingredients.
Video Moisturizer
With indication
Moisturizers prevent and treat dry skin, protect sensitive skin, improve skin color and texture, and mask imperfections. Moisturisers are also used in newly tattooed skin and skin care.
Normal skin preservation
Moisturizers can be used to prevent the skin from becoming too dry or oily, such as mild and non-greasy water-based moisturizers. Such moisturizers often contain light oils, such as cetyl alcohol, or materials derived from silicon, such as cyclomethicone.
Dried skin
To treat skin dryness, the most appropriate moisturizer is a heavier, oil-based moisturizer that contains ingredients such as antioxidants, grape seed oil or dimethicone. For very dry and cracked skin, petrolatum-based products are better, because they are more durable than cream and are more effective in preventing water evaporation.
Oily skin
For oily skin, moisturizers can still be useful after activities cause skin dryness, such as other skin care products and washes. For oily skin, water-based moisturizers that are particularly non-comedogenic are preferred, because the risk of forming a blackhead is less.
Skin aging
The right moisturizer to keep skin aging smooth and well hydrated is an oil-based petrolatum-containing base, along with antioxidants or alpha hydroxy acid to wrinkles.
Sensitive skin
In sensitive skin (susceptible to skin irritation, redness, itching or rash), it is better to use a moisturizer containing soothing ingredients such as chamomile or aloe vera, and minimize potential allergens such as fragrances or dyes, as well as irritants. such as acid.
Eczema
In eczema it is usually best to match a thicker ointment to the driest and driestest skin. Light emollients such as dilute creams may have no effect on very dry skin. Some common emollients to remove eczema include Oilatum, Balneum, Medi Oil, Diprobase, bath oil and aqueous creams. Sebexol, Epaderm ointment, Exederm, and Eucerin lotion or cream can also help with itching. Lotion or cream can be applied directly to the skin after bathing to lock in moisture. Moisturizing gloves (gloves that keep skin in contact with skin on hand) can be worn during sleep. Generally, the use of emollients twice a day is very effective. While the creams are easy to apply, they are quickly absorbed into the skin, and therefore need frequent reapplication. Ointments, with fewer moisture content, stay in the skin longer and require fewer applications, but they can become oily and uncomfortable.
Recently, ceramide, which is the major lipid constituent of the stratum corneum, has been used in the treatment of eczema. They often become one of the modern moisturizing ingredients. The lipid is also successfully produced synthetically in the laboratory.
A randomized controlled trial in infants found that subjects with emollient-treated atopic dermatitis (eg, Eucerin, Cetaphil, Nutraderm) had significantly lowered the requirements for topical steroids compared with those untreated control groups. Emollients are best applied immediately after a bath when the skin is well hydrated.
Maps Moisturizer
Action mechanism
- Occlusives: This works by forming a thin layer on the surface of the skin to prevent loss of moisture.
- Humectan: It draws moisture from the air to moisturize the skin.
- Recovery of deficient ingredients: It is more complex and tries to restore the natural moisturizing factor to the skin, such as amino lipids.
- antipruritus action (anti-itching): down regulates cytokines and the cooling effect of water evaporation for water-based moisturizers.
- antimitotic (mito inhibitor) Ã,: Slows down the process of mitosis (cell division) in the epidermis by mineral oil, which may be helpful for people with psoriasis.
- UV Protection: moisturizers also contain sunscreen that will protect your skin from UV rays.
- inhibits pro-inflammatory prostanoid production: blocks the activity of cyclooxygenase which causes soothing and lower skin inflammation.
- wound healing: hyaluronic acid, antimicrobial effects by acting against microbial surfaces
Risk
Two factors should be considered when assessing the safety of moisturizers:
- Security of the materials it contains
- The risk of bacterial contamination
A recent study found certain moisturizing applications increase the incidence of skin cancer in high-risk mice, but these animals are subjected to high-dose UVB radiation over a long period of time before moisturizing applications. Four popular moisturizers were tested, giving the same results. Not yet known whether the same thing applies to humans. The fifth moisturizer, specially prepared without mineral oil and sodium lauryl sulphate, has no such effect. The researchers asked Johnson & Johnson produced this cream for research, which then patented a pharmaceutical company.
Some people are sensitive or allergic to certain chemical components, which can cause irritation, rashes, and other allergic reactions.
Like most skin care products, there is a risk of moisturizer contaminated with bacteria that can cause disease.
See also
- Barrier cream
- Lotion
References
Source of the article : Wikipedia
0 Comments