Views: 0 Author: Site Editor Publish Time: 2026-10-13 Origin: Site
As we all know, surfactants are the functional ingredients that deliver real cleaning power in personal‑care cleansing products. Three major types are widely available on the market: soap‑based surfactants, sulfate‑based surfactants and amino‑acid‑based surfactants.
Soap‑based cleansing products are strongly alkaline materials with a pH value ranging from 9 to 10, commonly used as raw materials for bar soap. They produce rich foam and work well for people with oily skin.
Healthy human facial skin is slightly acidic, with a pH of 4.5‑6.5. Long‑term use of strongly alkaline soap may strip excessive natural skin oils and cause skin dryness. Strong cleansing power can also remove intercellular lipids, which may lead to dry skin or even skin inflammation.
Sulfate‑based surfactants offer decent cleaning performance and are weakly alkaline. Their cleaning capacity outperforms soap‑based materials in many cases.
Many sulfate‑based surfactants originate from petroleum feedstock. In their raw state, they carry unpleasant odours and show dark colour. They are also susceptible to bacterial growth, which shortens shelf life. Many manufacturers add extra chemical additives to fix these drawbacks.
As anionic fatty alcohol sulfate salts, sulfate‑based surfactants can have limited water‑solubility. They may not rinse off completely and leave residues on the skin surface, potentially triggering skin discomfort. In addition, wastewater containing petroleum‑derived sulfate surfactants is difficult to biodegrade and may bring pressure to the aquatic environment.
Compared with soap‑based and sulfate‑based options, amino‑acid‑based surfactants deliver balanced overall performance.
From a safety perspective, amino‑acid‑based surfactants feature safe raw‑material sources. The base material has a mild natural scent and clear appearance, with no need for harsh chemical additives. Their pH sits between 5.5‑6.5, matching the slightly‑acidic pH of human skin. They are skin‑friendly and cause minimal eye irritation.
Amino‑acid‑based surfactants are amphoteric‑type ingredients with good water‑solubility. They rinse away thoroughly without leaving skin residues.
For environmental performance, they have low toxicity and good biodegradability. After use, wastewater containing these surfactants can be broken down by aquatic microbes into carbon dioxide and water, with limited impact on water systems.
Amino‑acid‑based shampoo has become a popular new‑generation product after silicone‑containing and silicone‑free shampoo. Compared with silicone‑free shampoo, amino‑acid‑based shampoo delivers better moisturising effects without the heavy, sticky feel of silicone‑added formulas, helping keep the scalp fresh. Since a healthy scalp is slightly acidic, shampoo formulated with amino‑acid‑based surfactants helps maintain natural scalp pH balance and supports healthy scalp condition.
Derived from amino acids, the building blocks of protein, amino‑acid‑based surfactants match the pH of human skin. They are gentle enough for acne‑prone skin as well as sensitive skin.
As a result, amino‑acid‑based surfactants are drawing growing industry attention and represent an important trend in the global personal‑care cleansing sector.
Do you now understand these key facts about surfactants?
Our company supplies a broad portfolio of high‑quality surfactants for household cleaning, industrial washing and personal‑care applications. We can provide stable raw‑material solutions tailored to different product positioning and formulation requirements.
