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While offering a straightforward and effective natural odor solution, Phitku's Alum Roll-On makes several strong claims that outrun its publicly available evidence, particularly regarding quantified efficacy and clinical proof.
₹699 • Analysed 22 September 2026
This Phitku Alum Infused Crystal Roll-On Stick is positioned as a natural and effective deodorant for the Indian market, leveraging the traditional use of alum (fitkari). Its claims of odor control and mild skin brightening are relevant for consumers in India's humid climate, where body odor and underarm pigmentation are common concerns. The pricing at Rs.699-999 places it in the mid-to-premium segment for deodorants. Several claims, particularly the quantified 'up to 99% reduction in bacteria' and 'clinically proven' statements, lack detailed public evidence, which could attract ASCI scrutiny. The use of 'natural antiperspirant' also borders on a drug claim, though alum's astringent properties are generally accepted in cosmetics.
Independent and free. The Clean Sheet takes no money from brands to review, rank, or approve a product. This is a web evidence review, not a Clean Sheet certification. We checked the ingredient list, publicly available test reports, marketing claims, and formula logic using only public information available at the time of review.
Alum has gentle exfoliating and astringent properties that help reduce pigmentation and uneven skin tone, promoting brighter and smoother underarm skin over time. This is ingredient-level theory, not finished product evidence.
Dermatologically tested. However, no details of the testing (method, sample size, duration) are provided. Alum can be irritating for some sensitive skin types.
This is an absolute claim that is impossible to substantiate. All substances can be toxic at a certain dose. No publicly visible proof.
The product is a solid crystal that is wetted for application, making it less likely to leave visible stains or residue compared to cream or gel deodorants. User testimonials also support this.
Potassium alum is well-known for its antimicrobial and astringent properties, which help inhibit the growth of odour-causing bacteria.
No publicly visible evidence or scientific basis found to support this claim.
The ingredient list states '100% Potassium Sulphate (Alum)'.
The brand states 'clinically proven to reduce odour-causing bacteria'. However, no specific clinical study details (methodology, sample size, duration, results) are provided to substantiate the 'up to 99%' quantification.
What we could confirm from public sources and the verified ingredient list.
Ingredient Safety & Toxicity
Brand describes ingredient origin in its claims.
Irritation & Allergen Risk
Brand claims dermatologist testing (claim stated; underlying report not seen).
Ingredient Transparency
The full INCI list is publicly available, not just hero ingredients.
Active percentages are disclosed for the hero ingredient(s).
Ingredients are listed in the descending order required by India Cosmetics Rules 2020.
Standards & Compliance
Usage warnings and directions are clear on the label.
Screened against a curated reference set that we are continuing to verify and expand, so “clear” means no flag from that set, not a guarantee. Not a substitute for a full toxicological or clinical assessment.
| Ingredient |
|---|
Potassium Sulphate (Alum) |
INCI order as declared on packaging. Position reflects approximate concentration (high to low).
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
Flags are based on publicly available INCI only. Not a substitute for full regulatory compliance review.
“100% Non-Toxic”
Absolute claim without substantiation.
“helps reduce odour-causing bacteria by up to 99%”
Quantified claim without disclosed methodology or verifiable study.
“Dermatologically tested.”
Claim of testing without disclosing methodology or results.
“clinically proven to reduce odour-causing bacteria while supporting naturally brighter underarms.”
Claim of clinical proof without disclosing methodology or results.
“clinically tested”
Claim of testing without disclosing methodology or results.
“reduces wetness caused by excessive perspiration”
The term 'reduces wetness caused by excessive perspiration' borders on an antiperspirant claim, which can be drug-like. While alum has astringent properties, specific efficacy data for this product is not provided.
“natural antiperspirant”
The term 'antiperspirant' implies a physiological effect on sweat glands, which can cross into drug territory without specific CDSCO registration for such claims.
Alum has gentle exfoliating and astringent properties that help reduce pigmentation and uneven skin tone, promoting brighter and smoother underarm skin over time. This is ingredient-level theory, not finished product evidence.
Mentioned only
Dermatologically tested. However, no details of the testing (method, sample size, duration) are provided. Alum can be irritating for some sensitive skin types.
Evidence visible
This is an absolute claim that is impossible to substantiate. All substances can be toxic at a certain dose. No publicly visible proof.
Missing
The product is a solid crystal that is wetted for application, making it less likely to leave visible stains or residue compared to cream or gel deodorants. User testimonials also support this.
Evidence visible
Potassium alum is well-known for its antimicrobial and astringent properties, which help inhibit the growth of odour-causing bacteria.
Mentioned only
No publicly visible evidence or scientific basis found to support this claim.
Missing
The ingredient list states '100% Potassium Sulphate (Alum)'.
Mentioned only
The brand states 'clinically proven to reduce odour-causing bacteria'. However, no specific clinical study details (methodology, sample size, duration, results) are provided to substantiate the 'up to 99%' quantification.
Evidence visible
Alum is known for its antibacterial and astringent properties. Skin brightening is an ingredient-level benefit, not specific finished product evidence.
Mentioned only
Dermatologically tested. However, no details of the testing (method, sample size, duration) are provided. Alum can be irritating for some sensitive skin types.
Evidence visible
Public evidence the brand could provide to close verification gaps
This review evaluates brand claims against visible evidence and formula logic. It does not replace a full ingredient safety analysis or a clinical product test. Results vary by individual, and the consumer should always read the full ingredient list and follow usage guidance.
Are you the brand? If you have published test data or want to request a re-review, write to us at hello@thecleansheet.in.
The full INCI list is publicly available, not just hero ingredients.
Active percentages are disclosed for the hero ingredient(s).
Ingredients are listed in the descending order required by India Cosmetics Rules 2020.
Standards & Compliance
Usage warnings and directions are clear on the label.
Screened against a curated reference set that we are continuing to verify and expand, so “clear” means no flag from that set, not a guarantee. Not a substitute for a full toxicological or clinical assessment.
The product is a solid crystal that is wetted for application, making it less likely to leave visible stains or residue compared to cream or gel deodorants. User testimonials also support this.
Potassium alum is well-known for its antimicrobial and astringent properties, which help inhibit the growth of odour-causing bacteria.
No publicly visible evidence or scientific basis found to support this claim.
The ingredient list states '100% Potassium Sulphate (Alum)'.
The brand states 'clinically proven to reduce odour-causing bacteria'. However, no specific clinical study details (methodology, sample size, duration, results) are provided to substantiate the 'up to 99%' quantification.
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
No prohibited or restricted ingredients identified
Flags are based on publicly available INCI only. Not a substitute for full regulatory compliance review.
Alum has gentle exfoliating and astringent properties that help reduce pigmentation and uneven skin tone, promoting brighter and smoother underarm skin over time. This is ingredient-level theory, not finished product evidence.
Mentioned only
Dermatologically tested. However, no details of the testing (method, sample size, duration) are provided. Alum can be irritating for some sensitive skin types.
Evidence visible
This is an absolute claim that is impossible to substantiate. All substances can be toxic at a certain dose. No publicly visible proof.
Missing
The product is a solid crystal that is wetted for application, making it less likely to leave visible stains or residue compared to cream or gel deodorants. User testimonials also support this.
Evidence visible
Potassium alum is well-known for its antimicrobial and astringent properties, which help inhibit the growth of odour-causing bacteria.
Mentioned only
No publicly visible evidence or scientific basis found to support this claim.
Missing
The ingredient list states '100% Potassium Sulphate (Alum)'.
Mentioned only
The brand states 'clinically proven to reduce odour-causing bacteria'. However, no specific clinical study details (methodology, sample size, duration, results) are provided to substantiate the 'up to 99%' quantification.
Evidence visible
Alum is known for its antibacterial and astringent properties. Skin brightening is an ingredient-level benefit, not specific finished product evidence.
Mentioned only
Dermatologically tested. However, no details of the testing (method, sample size, duration) are provided. Alum can be irritating for some sensitive skin types.
Evidence visible
“100% Non-Toxic”
Absolute claim without substantiation.
“helps reduce odour-causing bacteria by up to 99%”
Quantified claim without disclosed methodology or verifiable study.
“Dermatologically tested.”
Claim of testing without disclosing methodology or results.
“clinically proven to reduce odour-causing bacteria while supporting naturally brighter underarms.”
Claim of clinical proof without disclosing methodology or results.
“clinically tested”
Claim of testing without disclosing methodology or results.
“reduces wetness caused by excessive perspiration”
The term 'reduces wetness caused by excessive perspiration' borders on an antiperspirant claim, which can be drug-like. While alum has astringent properties, specific efficacy data for this product is not provided.
“natural antiperspirant”
The term 'antiperspirant' implies a physiological effect on sweat glands, which can cross into drug territory without specific CDSCO registration for such claims.
Public evidence the brand could provide to close verification gaps
