• Exclusive distributor of select brands since 1996
  • Free shipping on orders of CHF 50 or more
  • Secure payment
  • B2B Wholesale
BHA

Salicylic Acid (BHA): The Deep-Pore Cleanser

Bonsana Redaktion
Salicylic acid: a clear drop on light-colored willow bark

Active Ingredients Glossary · S

INCI: Salicylic Acid

Salicylic acid is the beta-hydroxy acid (BHA) of skincare—and the active ingredient with one of the most robust bodies of research data available. It exfoliates dead skin cells, unclogs pores, and also helps soothe inflammation. If you’re prone to blackheads and blemishes, it’s an essential ingredient.

Profile
Research
Effective against blackheads, pimples, and clogged pores
Skin Type Oily, combination, prone to blemishes
Concentration: Standard cosmetic range: 0.5–2%
Routine: In the evening; start with 2–3 times per week
Adjustment period: 2–4 weeks

What is salicylic acid?

Salicylic acid belongs to the group of beta-hydroxy acids and was originally derived from willow bark; today it is produced synthetically. In cosmetics, it acts as a keratolytic agent: it loosens the bonds between dead skin cells, allowing them to shed more easily. This is precisely what makes it the standard active ingredient for treating blackheads and clogged pores.

The key difference from AHAs—glycolic acid, lactic acid, mandelic acid—lies in solubility. AHAs are water-soluble and work on the skin’s surface: they’re effective against roughness, a dull complexion, and fine lines. Salicylic acid is oil-soluble and therefore mixes with the sebum inside the pore. It penetrates the pore canal and clears out the area where the blockage actually occurs. In short: AHAs for the surface, BHAs for the deeper layers.

Effectiveness: What the Evidence Shows

Salicylic acid is one of the most thoroughly studied cosmetic active ingredients—hence five out of five bars. Three effects have been proven: It dissolves dead skin cells (keratolytic), it clears and prevents pore blockages (comedolytic), and, due to its relationship to salicylates, it has a mild anti-inflammatory effect—irritated, reddened areas calm down more quickly.

In practice, this means: fewer blackheads, a finer pore appearance, and a more even complexion. What salicylic acid is not: an acne treatment. For inflammatory or cystic acne, it’s a useful component, but it does not replace dermatological treatment. And it requires patience—visible changes in pore appearance occur after two to four weeks of regular use, not after two days.

Application & Combination

Start low: two to three evenings a week, then gradually increase if your skin tolerates it. Apply to cleansed, dry skin, followed by moisturizer. Because the stratum corneum thins, sunscreen is a must in the morning. On the body—back, shoulders, décolletage—soaps and shower products containing BHA work on the same principle, though the skin there is more resilient.

Good Combinations

✓ Niacinamide — regulates sebum while soothing the skin

✓ Hyaluronic acid and ceramides — counteract the drying effect

✓ SPF in the morning—not an option but a must after using acids

Note

! Do not start using retinol on the same evening—it’s better to alternate

! Consult a doctor if you’re sensitive to aspirin, or if you’re pregnant or breastfeeding

! More isn’t better — daily use can weaken the skin barrier

Salicylic acid in the BONSANA lineup

Available in the store

BHA Skincare for Blackheads and Pimples

Serums, masks, and soaps with salicylic acid for the face and body — ready to ship from our Swiss warehouse.

Go to the Blemished Skin category →
Related Entries: Niacinamide · Retinol · Cica (Centella) · Read More: Ingrown Hairs: What Helps

Frequently Asked Questions About Salicylic Acid

What’s the difference between AHAs and BHAs?

AHAs are water-soluble and work on the skin’s surface—great for roughness and a dull complexion. Salicylic acid (BHA) is oil-soluble and penetrates the sebum-filled pore canal. That’s why BHA is the first choice for blackheads and clogged pores.

How often can I use salicylic acid?

Start with two to three applications per week in the evening. If your skin tolerates it well, you can gradually increase the frequency. If your skin feels tight or starts to flake, take a step back.

Can I combine salicylic acid with retinol?

Yes, but not on the same evening if you’re just starting to use both. The easiest way is to alternate: BHA one evening, retinol the next. If your skin shows signs of irritation, space them out further.

Does salicylic acid also help with body acne?

Yes. BHA works the same way on your back, shoulders, and décolletage. Soaps and shower products that you let sit for a short time before rinsing off are particularly effective.

Keywords: BHA Salicylsäure Unreine Haut Wirkstoff-Lexikon
Previous post Next post

Related posts

Mother-of-pearl – a shimmering seashell with an iridescent interior; active ingredient in the BONSANA Hair Care Encyclopedia
Körperpflege

Mother-of-Pearl: The Timeless Classic from the Sea

Ingredient Encyclopedia · PINCI: Nacre / Mother of PearlMother of pearl is the classic shimmer from the sea: For centuries, this iridescent layer of the shell has been used in Asian and Central American beauty care. While modern research on it is limited, the visible, instant glow it provides is all the more real. An active ingredient for anyone who loves tradition and shimmer. Profile Research Helps combat a sallow, dull complexion Skin Type Anyone who wants a visible glow Concentration: As an extract or powder; no standard value Routine: Daily or as a glow boost Taper-in period: None required What is mother-of-pearl?Mother of pearl—known as “Nacre” in INCI terminology—is the iridescent inner layer of mollusk shells. It consists of calcium carbonate plates bound together by the protein conchiolin, along with minerals and amino acids. In cosmetics, mother of pearl is finely ground and used as a powder or extract.Its tradition is remarkable: in Chinese beauty care, ground pearls and mother-of-pearl have been prized for centuries, and mother-of-pearl soap also has a long history in Central America. Its modern application is more down-to-earth: today, mother-of-pearl primarily provides a subtle shimmering effect that diffuses light and makes the skin appear more even and fresher.Effect: What Is ProvenTwo out of five bars—and that’s a deliberately honest assessment: Regarding the effects of mother-of-pearl on the skin, there is primarily laboratory data on individual components and a wealth of traditional usage, but hardly any modern clinical studies. What can be said with certainty: The immediate effect is visually real—the delicate shimmer makes the skin appear better cared for and more even-toned, and the mild cleansing with a gentle exfoliating effect does the rest. Those looking for measurable skin changes are better off with active ingredients like niacinamide or vitamin C. Those who want a glow and a touch of traditional skincare have come to the right place.Application & CombinationMother-of-pearl skincare is straightforward: use it daily or as a boost before special occasions—a day at the beach, an event, or a date. It’s typically used for body cleansing with a gentle exfoliating effect. By the way: ESPONJABÓN offers a vegan take on this classic—the pearlescent effect comes from plant-based active ingredients and minerals, with absolutely no animal-derived mother-of-pearl. Pairs well with ✓ Follow up with body lotion—seals in moisture after cleansing ✓ Hyaluronic acid – hydration enhances the glow effect ✓ Gentle exfoliators—prepare the skin for the shimmer Note ! The glow is a visual effect—there is no evidence of deep-seated skin changes ! Genuine mother-of-pearl is of animal origin—vegan alternatives mimic the effect ! If you have a known allergy to shellfish, avoid real mother-of-pearl Mother-of-pearl in the BONSANA lineupESPONJABÓN Mother of Pearl – 2-in-1 Soap & Sponge CHF 4.95 2-in-1 Available in the shop ESPONJABÓN: the classic glow product from Mexico 2-in-1 soap & sponge in all varieties—shipped from our Swiss warehouse, delivered quickly to you. View the ESPONJABÓN collection → Related entries: Collagen · Hyaluronic Acid · Oats · Read more: BONSANA Bestsellers Frequently Asked Questions About Mother-of-PearlWhat are the benefits of mother-of-pearl in skincare?Above all, a visible, immediate effect: its delicate sheen diffuses light, making the skin appear more even and fresher. It also contains minerals and amino acids that nourish the skin.Is the effect of mother-of-pearl scientifically proven?Only to a limited extent. There is laboratory data on individual components and a long tradition of use, but hardly any modern clinical studies. The glow effect is visually evident—we deliberately do not promise more than that.Is mother-of-pearl vegan?Real mother-of-pearl isn’t—it comes from mussel shells. However, there are vegan alternatives: ESPONJABÓN achieves the pearlescent effect using plant-based active ingredients and minerals.Who benefits from mother-of-pearl skincare?For anyone who likes a visible body glow—such as before events or days at the beach—and enjoys a skincare ritual steeped in tradition. For targeted skin concerns, other active ingredients are the better choice.

Read more
Oats – Oatmeal with a creamy, milky dollop, active ingredient in the BONSANA Hair Care Encyclopedia
Empfindliche Haut

Oats: Colloidal Soothing for Sensitive Skin

Active Ingredients Glossary · HINCI: Avena Sativa KernelOats are more than just breakfast: In the form of colloidal oats—whole grains ground to a fine powder—they are among the most well-documented soothing agents for sensitive, itchy, and dry skin. A traditional active ingredient that has also won over modern researchers. Profile Research Findings Effective against itching, dryness, and irritated skin Skin Type Sensitive, dry, reactive skin Concentration As colloidal oats, effective at concentrations as low as approx. 1% Routine Daily Acclimatization: None required What is colloidal oats?Colloidal oats are created when the entire oat grain—including the bran—is ground so finely that it disperses evenly in water. The powder offers a complete skincare package: beta-glucans bind moisture and form a protective film on the skin, lipids support the skin barrier, starch soothes, and avenanthramides—antioxidants specific to oats—alleviate itching and redness.An interesting detail: In the U.S., colloidal oats are officially recognized by the FDA as a skin protectant—a status held by only a handful of ingredients. And oat baths for itchy skin have been a classic home remedy for generations.Effectiveness: What's ProvenFour out of five bars: The soothing effect on itching and dryness is well documented. Clinical studies show that skincare products containing colloidal oats provide noticeable relief for dry, itchy skin and support the skin barrier. Oats are also frequently recommended by dermatologists as a complementary treatment for skin prone to atopic dermatitis. It's important to note: Cosmetics containing oats nourish and soothe—they do not replace medically prescribed treatments for skin conditions.Usage & CombinationOats are a daily staple: gentle enough for everyday use, suitable for both the face and body, and safe for children's skin (follow the manufacturer's instructions). They are particularly useful in cleansing—where oats soothe the skin precisely at the moment when sensitive skin is otherwise under the most stress. Pairs Well With ✓ Cica – double the soothing effect for irritated skin ✓ Glycerin & Panthenol – hydration plus barrier care ✓ Rich lotions afterward – lock in moisture Note ! For neurodermatitis or eczema, oat-based skincare is not a substitute for medical treatment ! Avoid very hot showers—they dry out the skin and negate even the best skincare ! If you have a known allergy to oats, avoid these products; if in doubt, consult a doctor Oat Products in the BONSANA LineESPONJABONOatmeal – 2-in-1 Soap & Sponge with OatsCHF 4.952-in-1 Available in the shop Gentle care for sensitive skin Soothing cleansing and care with oats, centella asiatica, and more—shipped from our warehouse in Switzerland, delivered quickly to you. View the Sensitive Skin Collection → Related entries: Cica · Hyaluronic Acid · Niacinamide · Read more: Moisturizing after summer vacation Frequently Asked Questions About OatsWhat's the difference between oats and colloidal oats?Colloidal oats are the whole grain, ground to a very fine powder, which disperses evenly in water. This is the only way to ensure that all components—beta-glucans, lipids, and avenanthramides—are preserved together and remain effective for skin care.Do oats help with atopic dermatitis?Colloidal oats are often recommended by dermatologists as a complementary skincare treatment because they help relieve itching and dryness. They do not replace medically prescribed treatment—during a flare-up, both should be used together.Can I use oat-based skincare products every day?Yes. Colloidal oats are extremely mild, require no adjustment period, and are suitable for daily cleansing and skincare—including for children's skin (follow the manufacturer's instructions).Is using oat-based skincare a problem if I have gluten intolerance?Celiac disease affects the digestive system, not the skin's surface—colloidal oats in skincare products are generally considered safe in this context. However, if you have a true oat allergy, you should avoid it and consult a doctor if in doubt.

Read more
Tea Tree Oil – narrow tea tree leaves with clear drops of oil; active ingredient in the BONSANA Hair Care Encyclopedia
Unreine Haut

Tea Tree Oil: The Natural Cleanser

Active Ingredients Glossary · TINCI: Melaleuca Alternifolia Leaf OilTea tree oil is the classic among botanical clarifying agents: This essential oil from Australia helps treat oily, blemish-prone skin—and is one of the few plant oils whose effects have been relatively well studied. The most important rule first: always use it diluted. Profile Research Effective against blemishes, oily skin, and uneven skin texture Skin Type Oily, blemish-prone skin Concentration Diluted in ready-to-use products (up to approx. 5%) Routine: 2–3 times per week or as needed Acclimatization: Test for tolerance What is tea tree oil?Tea tree oil is extracted via steam distillation from the leaves of Melaleuca alternifolia, a tree native to eastern Australia. Australia’s indigenous peoples used the leaves long before the oil found its way into European bathrooms. The compound primarily responsible for its purifying effect is terpinen-4-ol, which makes up about 30 to 40 percent of high-quality tea tree oil.Incidentally, the tree has nothing to do with tea—the name dates back to early European sailors who brewed a tea-like infusion from the leaves.Effect: What’s Been ProvenFour out of five bars—remarkable for a plant oil: Several controlled studies show that diluted tea tree oil, usually in the form of a 5-percent gel, can visibly improve the appearance of the skin in cases of mild blemishes. The clarifying properties of terpinen-4-ol are also well documented in the lab. There are two important caveats: Tea tree oil works more slowly than traditional acne-fighting ingredients, and acne is a skin condition that requires dermatological treatment—cosmetics containing tea tree oil are for skincare, not therapy.Application & CombinationThe golden rule: use it diluted. When applied undiluted, the essential oil can significantly irritate the skin—in ready-made products such as sheet masks, cleansers, or hair oils, it is already formulated in a skin-friendly concentration. Use two to three times a week or spot-treat troubled areas; test new products on the inner elbow first. Good Combinations ✓ Salicylic acid (BHA)—clears the pores; tea tree oil rounds out the formula ✓ Niacinamide – supports sebum regulation and soothes ✓ Activated charcoal – absorbs excess sebum in cleansing masks Note ! Never apply undiluted or over large areas of the skin—irritation and contact allergies are possible ! Do not apply near the eyes; consult a doctor if you have existing acne Myth debunked: “The higher the dose, the better it is for treating pimples”—not proven. Studies have shown that even diluted tea tree oil is effective; higher concentrations primarily increase the risk of irritation, not the benefits. Tea tree oil in the BONSANA lineup SKIN REPUBLIC Spots + Blemish Sheet Mask with Tea Tree Oil & CHF 4.95 Sheet Mask SKIN REPUBLIC Bubble Charcoal Sheet Mask with Activated Charcoal CHF 5.95 Sheet Mask HAIR SYRUP Mint Condition Pre-Wash Hair Oil CHF 19.80 100 ml Available in-store Clarifying Care for Blemish-Prone Skin Sheet masks, BHA, and more for a clearer complexion—shipped from our Swiss warehouse, delivered quickly to you. View the Blemish-Prone Skin Collection → Related entries: Salicylic acid · Niacinamide · Rosemary · Read more: Sheet mask vs. hydrogel vs. peel-off Frequently Asked Questions About Tea Tree OilCan I dab pure tea tree oil directly on pimples?We don’t recommend this. When used undiluted, the essential oil can irritate many skin types and may trigger contact allergies. Ready-to-use products containing tea tree oil are the safer choice—they’re formulated with the correct dosage.Does tea tree oil help with acne?For mild breakouts, studies show visible improvements in skin appearance. However, acne is a skin condition that requires dermatological treatment—tea tree oil cosmetics can complement, but not replace, that treatment.Is tea tree oil suitable for the scalp?Yes, when diluted in hair oils or shampoos, it’s often used for oily or itchy scalps—for example, combined with peppermint and eucalyptus.How do I store tea tree oil properly?In a dark, cool place and tightly sealed. The oil oxidizes when exposed to air and light—and oxidized tea tree oil is the most common cause of skin irritation.

Read more

Leave a comment

Please note that comments must be approved before they are published.

Welcome to our store
Welcome to our store
Welcome to our store
Home Shopping Cart Products Brands