From some proven facts, it is clear some red, itchy rash are caused by laundry detergent especially when they are used for washing baby clothes. It means they are not always caused by direct touch. You may not notice redness or itching for up to a week if your child is allergic to laundry detergent or fabric softener. It may take some time for the immune system to recognize allergies. An allergic response in a baby looks like Itchy welts or hives. The skin may get flushed or breaks out in a rash. Swelling of the face, tongue, lips, diarrhea, or vomiting is other symptoms. Chemicals in some laundry detergents can cause skin dermatitis. When something irritates the skin it causes a rash. Eczema-prone babies and children are more likely to develop contact dermatitis than those who do not have skin problems. Contact dermatitis, which manifests as a red, itchy rash that can be broad or limited to specific places such as the armpits and groin, can be triggered by laundry detergents. Laundry detergent allergies or sensitivities can occur after a single encounter or after repeated exposures depending on the degree of someone’s skin sensitivity. 
As an immediate treatment, use a fragrance-free soap and wash the afflicted region with cool water. Thoroughly rinse your skin. Then pat your skin dry. You can also use over-the-counter anti-skin allergy ointments or lotions. To effectively treat contact dermatitis, you must first identify and prevent the source of your reaction. The rash normally clears up in two to four weeks if the offending chemical is avoided. Cool, damp compresses, anti-itch lotions, and other self-care measures can help soothe your skin. In short, Eczema can be controlled rather than cured. Some parents are very strict about the treatment of other health concerns but ignore their child's eczema, believing that skin problems are minor. It's a significant concern when youngsters feel itchy every day of their lives. It seriously affects children’s life quality and has to be cured immediately.
Rash from Laundry Detergent
The skin can be irritated by many substances. Getting an allergy from laundry detergent is the most common type of skin allergy. They may smell like morning dew or spring rain, but it's probably full of dangerous chemicals that cause skin irritation. It happens when an irritating chemical affects your skin's top layer, resulting in an itchy rash. You may experience a reaction to a detergent the first time you use it or after repeated use. Contact dermatitis is most commonly found in places exposed to strong irritants, such as the skin beneath a piece of jewelry. 
However, if the symptoms are severe, you should look into laundry detergent as a possible reason. Because washed clothing comes into contact with your entire body, symptoms can emerge anywhere. Symptoms might be exacerbated in regions where clothing gets wet with sweat, such as the armpits and groin. The sensitive skin on your face may be irritated by a freshly washed pillowcase. Generally, it's not uncommon for people to have skin responses to the chemicals in conventional detergents. Detergents, like most soaps, contain a surfactant, or surface-acting ingredient. Surfactants function by dislodging dirt and oil particles so they can be rinsed away. For those with sensitive skin, harsh surfactants might be unpleasant. Artificial scents are another class of chemicals that can irritate the skin. Laundry detergent manufacturers frequently utilize proprietary fragrance blends, making it impossible for customers to determine exactly what's in them. These Laundry detergent compounds cause rashes in both children and adults. The majority of people can avoid rashes from laundry detergent by using fragrance- and dye-free detergents. 
Detergent Rash
The majority of rashes that are caused by detergent, can be treated at home with simple medicines and a change in lifestyle. The most crucial thing you can do if you're allergic or sensitive to a chemical irritant, such as a certain brand of detergent, is to identify it. Then you'll be able to take precautions to avoid it. Consider taking the following methods to relieve your symptoms:
- Apply a steroid lotion to the affected area. Itching and inflammation can be relieved using an over-the-counter steroid cream containing at least 1% hydrocortisone.
- Use an anti-itch cream to get rid of the itch. Calamine lotion soothes and protects the skin from scratching.
- Take an antihistamine to help you sleep. Antihistamines help alleviate allergy symptoms.
- Take a bath in oatmeal. An oatmeal bath can help calm irritated skin and relieve irritation.
- Apply a moist compress to the affected area. Inflamed skin can be soothed and soreness reduced by soaking a cloth in cool water.
For prevention use a detergent that is fragrance and dye-free. The compounds of artificial scents and dyes are known to cause allergies in many people. Try a natural option like Seventh Generation Free and Clear, a dye- and fragrance-free detergent made from vegetables. More natural detergents can be found at your local health store. 
Double-rinsing is another preventive way. To keep soap residue from building up on your clothes, one extra rinse cycle may be all you need. To help destroy allergies, use the hottest water possible. Instead of fabric softener and dryer sheets, use dryer balls. By avoiding fabric softener and dryer sheets, you can reduce the number of chemicals you consume. Dryer balls, which are often made of wool, plastic, or rubber, can soften clothes and decrease static without any additional chemicals. Baking soda and vinegar can be also used to reduce skin allergies. Baking soda and vinegar work well together as a natural cleaning agent. They can be used instead of detergent or as part of a second wash cycle. These non-irritating products can be used to brighten and soften clothing naturally. If you can’t trust any detergent brand, create your own laundry detergent. By washing soda and borax, you may produce your own detergent. This solution is fragrance- and dye-free, as well as cost-effective. Consider using olive oil-based Castile soap for added cleaning strength. To avoid skin irritation, your washing machine should be cleaned. 
If you have a family member who is allergic to chemicals, make sure to wash the machine after each load with regular detergent. Soap scum and chemical buildup can be removed from the machine by running it through a hot water cycle with baking soda and vinegar. As the last resort, stains can be organically pretreated. Pretreat stains with a mixture of water, washing soda, and baking soda is a perfect way to avoid using chemical stain removers.
Detergent Rash Baby
Skin eczema such as rash or welt is seen more in a baby or kids due to using inappropriate detergent. As a result, the importance of using the mildest detergent is obvious. There is absolutely a wide selection of baby-specialized laundry detergent. They are plant-based, fragrance-free, and hypoallergenic products that use powerful enzymes to clean clothes and remove tough stains. It is entirely up to you to make your selection. While some families may throw everyone's soiled clothes in the same load, using the same laundry detergent for all isn't a good idea. 
Chemicals and scents in regular laundry detergent can irritate a baby's sensitive skin. To wash baby garments, use a fragrance-free detergent and omit the fabric softener. A fabric softener might diminish the effectiveness of flame retardancy in baby clothing while also irritating the skin of your child. In short, Skin eczema, such as a rash or welt, can be controlled in babies and children by using the mildest detergent. There is an abundance of baby-specific laundry detergent on the market. They're fragrance-free, hypoallergenic, and plant-based products that clean clothes and remove difficult stains with powerful as well as safer enzymes.
Detergent Rash Toddler
The skin is the largest and most exposed organ in our bodies. The skin of a toddler and a child, particularly newborns is rash-prone in case of direct contact with detergent. Their skin’s unique properties make it more sensitive. So, any irritations and infections are more common in babies and children. Thus, Clothing and blankets for children should be washed with a moderate, hypoallergenic detergent to preserve their sensitive skin. Different reasons can cause irritated skin. The most common reason is detergent. 
As a result, there are a plethora of baby laundry detergents on the market, some of which claim to be the best and are suggested by dermatologists or pediatricians. The degree of someone’s skin sensitivity depends on family history. A youngster with inflamed skin is more likely to have a reaction to laundry detergent. A history of Atopic Dermatitis (Eczema) in the family can potentially put the infant in danger. To see if the rash is caused by detergent or anything else, Check under your child's diaper, where the clothing does not touch the skin. If you have a rash, it is not due to the detergent. Furthermore, detergent rashes are more common on the arms and legs, where clothing is tighter and touches the skin more. Please keep a detailed record of your child's reactions, family history, symptoms, and duration while contacting your Pediatric Dermatologist, and mention if your child is taking any medications.