About kareishu– a natural body odor that often develops with age
As we age, our bodies naturally go through changes, and one of those changes is the development of a specific body odor known as kareishu (加齢臭). This Japanese term, first coined by the renowned skincare company Shiseido, refers to the subtle, natural scent that many people start to notice as they get older. While completely normal, it can be something that makes people feel self-conscious. Our soap can neutralize body odors including kareishu caused by a chemical compound called nonenal.
Embracing the natural changes that come with aging is important, but feeling confident in your own skin matters too. With our specially formulated soap, you can effectively manage kareishu and enjoy a sense of freshness, helping you feel more comfortable and self-assured.
Nonenal is a fatty aldehyde that typically becomes more prominent in people as they age. It is produced through the oxidation of unsaturated fatty acids found in the skin's sebaceous glands. As the skin matures, its composition changes, leading to an increased release of nonenal. This process can result in a distinct odor that some describe as grassy, greasy, or oily.
While nonenal is a natural byproduct of aging, it can make some individuals feel self-conscious. Products specifically designed to neutralize this compound can help alleviate concerns about body odor. Our soap effectively targets nonenal and other odor-causing substances, promoting a sense of freshness and confidence.
Aging Process : As we grow older, our skin undergoes various changes, including decreased moisture levels, altered pH balance, and reduced sebaceous gland activity. These changes can lead to the accumulation of nonenal and other odor-causing compounds.
Diet and Lifestyle : Factors such as diet, stress, and overall health can influence the production of nonenal. For instance, high-fat diets or poor hydration can exacerbate its presence.
Hormonal Changes : Fluctuations in hormone levels, especially during menopause, can affect skin chemistry, contributing to an increase in nonenal production.
One of our soap’s key ingredients is premium Japanese persimmon tannin, a component derived
from the fruit of the persimmon tree, known for its unique ability to neutralize body odors,
specifically noneal. One study found that a polyphenol mixture of tea and an astringent persimmon had high antioxidative effect and deodorant effects against noneal.
Persimmon tannin has a unique chemical structure that allows it to bind with nonenal molecules, effectively neutralizing the odor at its source. This makes it an excellent choice for individuals looking to manage kareishu.
Add visualization like above ^ taken from https://www.shiseido.co.jp/sw/beautyinfo/DB009091/
This shows the noneal that people produce (x axis is age, y
axis is noneal amount)
At JH Serene, we also conducted studies to test the efficacy
of our premium persimmon soap.
Our study results align with previous
studies on the effects of persimmon and tea soaps on body odors.
Japanese Persimmon Tannin is a natural ingredient prized for its powerful deodorizing and skinnourishing properties. Derived from persimmon fruit, this tannin has been used in Japan forcenturies to neutralize body odors, particularly those associated with aging, such as kareishu.Its antimicrobial properties help keep skin healthy, while its gentle nature makes it suitable for allskin types. In soap, persimmon tannin not only cleanses but also refreshes, leaving the skinfeeling soft, smooth, and revitalized, ensuring longlasting freshness and confidence
Green tea leaf extract are powerhouse ingredients derived from the teaplant, known for their antioxidant and skinsoothing benefits. The leaf extract, rich inpolyphenols, helps protect skin from environmental stressors while promoting a healthy, radiantappearance. The seed oil, packed with essential fatty acids and vitamins, deeply hydrates andnourishes the skin, enhancing softness and elasticity. Together, they provide a natural, gentleway to cleanse and moisturize to leave your skin rejuvenated and refreshed.
Vitamin E is a powerful antioxidant that helps protect the skin from free radical damage, which can accelerate aging. It promotes skin healing and strengthens the skin’s natural barrier, making it ideal for improving moisture retention and overall skin health. Known for its anti inflammatory properties, Vitamin E helps soothe irritated skin and reduces the appearance of scars and fine lines. In skincare products, it works to nourish and soften the skin, leaving it smooth, supple,and protected against environmental stressors
Our soap is handcrafted using natural ingredients that are gentle on the skin and the environment. With a blend of essential oils, nourishing butters, and plant-based ingredients, our soaps provide a luxurious cleansing experience while keeping your skin hydrated and healthy. Discover the power of natural soap in every wash.
**Avoid Very Hot Water**: Stick to lukewarm water when washing your face or showering, as hot water strips away natural oils. **Pat Skin Dry**: Gently pat (don’t rub) your skin dry with a towel after washing. **Eat Hydrating Foods**: Foods rich in omega-3s, like salmon and chia seeds, help maintain your skin's natural oil barrier. Winter doesn’t have to mean dry, uncomfortable skin. With a few adjustments to your routine and lifestyle, you can protect your skin and keep it looking radiant all season long. Remember, consistency is key—your skin will thank you for sticking to a nourishing routine all winter!
Here’s an example of a winter-friendly routine that can work for most skin types: Morning 1. Gentle Cleanser 2. Hydrating Serum (such as one with hyaluronic acid) 3. Moisturizer with ceramides 4. Sunscreen (SPF 30 or higher) Evening 1. Cream or Oil Cleanser to remove makeup and dirt 2. Exfoliate (1-2 times per week) 3. Moisturizing Serum 4. Night Cream or Rich Moisturizer
In winter, certain ingredients can make a big difference in your skincare routine: **Hyaluronic Acid**: This powerhouse hydrator holds up to 1,000 times its weight in water, making it essential for keeping skin plump and hydrated. **Ceramides**: These help to restore the skin barrier and retain moisture, which is critical in dry winter months. **Glycerin**: A humectant that draws moisture into the skin, glycerin is a great option for dry skin. **Shea Butter and Natural Oils**: Both shea butter and oils (like argan or jojoba) add an layer that seals in moisture and supports skin’s natural barrier.
