Any disadvantages to using syndet cleanser?

However, even though the syndet bar is mostly praised for its benefits, there is still a gray zone when it comes to some controversies regarding their usage. This is why it is important to consider some pros and cons when deciding if this product is the right choice for you. One of the most important things to consider is how it benefits your specific needs and overall health - even if it has proven efficient in many studies, this still doesn't mean it would be 100% effective in your specific case.Conventional soap gets hard over time because of its alkaline characteristics and lower solubility. On the other hand, syndet bars absorb moisture more easily - this makes them soft and more likely to break down when used frequently. As syndets normally contain milder surfactants and humectants, which are more skin-friendly, it would also mean that the bar could dissolve easily in water. The appropriate storage such as a well-drained soap dish or a ventilated container is recommended for keeping its shape and usability.

Another thing to consider is which exact product you are choosing, since the quality can significantly vary depending on the manufacturer. You should definitely check the chemical properties of the product - this will help you conclude what effects you can expect from that exact choice. For example, keeping the pH values of the skin neutral is one of the main benefits of syndets. The high pH value might irritate your skin and cause disturbance in the regular slightly acidic properties of the skin, which can further lead to problems with the skin barrier, especially if you have sensitive skin.

Overdrying your skin is another concern because some formulations can still cause dehydration of the skin, just like the regular soap. When choosing a dermatological bar, search for hydration-enhancing and skin barrier-enhancing components that don't dry your skin. The bar should contain glycerin, shea butter, ceramides, and hyaluronic acid all of which will help with retaining moisture. Mild surfactant compounds like sodium cocoyl isethionate and sodium lauroyl sarcosinate would be preferable compared to much harsher sulfates, which strip oils. 

As noted by McKINNEY (1957), synthetic detergents can cause environmental problems in connection with their breakdown, especially in sewage treatment plants and natural waters. Some syndets, such as alkyl sulfates, are easily biodegradable by bacteria, while others, such as alkyl benzene sulfonates, are much harder to biodegrade. This major problem still remains a subject of research: why are syndets so resistant to breakdown? This is an important issue in environmental protection.

Another potential disadvantage is that some syndet formulations can leave a residue on the skin or hair after application, which can sometimes be harder to rinse off than soap. These residues may cause an odd sensation of stickiness on the skin or build-up on the surface of the hair, especially in hard water areas. 

One of the things that can also be considered negative is the price of these products - it is usually higher than the price of regular soaps and cleansers. On the other hand, this price is “justified” by its quality and beneficial properties. In conclusion, syndet usage has more benefits than downsides, but it’s left on users to decide whether these products are suitable for their unique needs.