DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended	12 Months Ended
	Jul. 31, 2016	Jan. 31, 2016
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting and include the accounts of the Company and its subsidiary. Certain information and note disclosures normally included in the consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended January 31, 2016, filed on May 2, 2016. The condensed consolidated balance sheet as of January 31, 2016, included herein, was derived from the audited consolidated financial statements as of that date. The unaudited interim condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary and have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of the Company’s statement of financial position as of July 31, 2016 and January 31, 2016, and the Company’s results of operations and its cash flows for the three and six months ended July 31, 2016 and 2015. The results for the three and six months ended July 31, 2016 are not necessarily indicative of the results to be expected for the year ending January 31, 2017 or any future period	Basis of Presentation and Principles of Consolidation The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP"). The accompanying financial statements include the accounts of BioPharmX and its wholly-owned subsidiary. All intercompany transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses recognized during the reported period. Actual results could differ from those estimates.	Use of Estimates The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses recognized during the reported period. Actual results could differ from those estimates.
Inventories	Inventories Inventories are stated at the lower of cost or market. Cost is determined using the standard cost method which approximates actual cost on a first-in, first-out basis. Market value is determined as the lower of replacement cost or net realizable value. The Company regularly reviews inventory quantities in consideration of actual loss experiences, projected future demand and remaining shelf life to record a provision for excess and obsolete inventory when appropriate.	Inventories Inventories are stated at the lower of cost or market. Cost is determined using the standard cost method which approximates actual cost on a first-in, first-out basis. Market value is determined as the lower of replacement cost or net realizable value. The Company regularly reviews inventory quantities in consideration of actual loss experiences, projected future demand and remaining shelf life to record a provision for excess and obsolete inventory when appropriate.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. When such an event occurs, management determines whether there has been an impairment by comparing the anticipated undiscounted future net cash flows to the related asset’s carrying value. If an asset is considered impaired, the asset is written down to fair value, which is determined based either on discounted cash flows or appraised value, depending on the nature of the asset. The Company has not identified any such impairment losses to date.	Impairment of Long-Lived Assets The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. When such an event occurs, management determines whether there has been an impairment by comparing the anticipated undiscounted future net cash flows to the related asset's carrying value. If an asset is considered impaired, the asset is written down to fair value, which is determined based either on discounted cash flows or appraised value, depending on the nature of the asset. The Company has not identified any such impairment losses to date.
Advertising Expenses	Advertising Expenses The Company expenses the costs of advertising, including promotional expenses, as incurred. Advertising expenses were approximately $59,000 and $313,000 for the three months ended July 31, 2016 and 2015, respectively. Advertising expenses were approximately $278,000 and $549,000 for the six months ended July 31, 2016 and 2015, respectively.	Advertising Expenses The Company expenses the costs of advertising, including promotional expenses, as incurred. Advertising expenses were $1.2 million for year ended January 31, 2016, $90,000 for the one month ended January 31, 2015 and $68,000 for the year ended December 31, 2014.
Net Loss Per Share	Net Loss per Share Basic net loss per share attributable to common stockholders is calculated based on the weighted-average number of shares of the Company’s common stock outstanding during the period. The weighted average shares outstanding for the three and six months ended July 31, 2016 excludes 193,333 of unvested common stock. Diluted net loss per share attributable to common stockholders is calculated based on the weighted-average number of shares of the Company’s common stock outstanding and other dilutive securities outstanding during the period. The potential dilutive shares of common stock resulting from the assumed exercise of outstanding stock options, warrants and the assumed conversion of preferred stock are determined under the treasury stock method. For the three months ended July 31, 2016 and 2015, approximately 10,002,000 and 4,837,000 potentially dilutive securities, respectively, were excluded from the computation of diluted loss per share because their effect on net loss per share would be anti-dilutive.	Net Loss Per Share Basic net loss per share attributable to common stockholders is calculated based on the weighted-average number of shares of the Company's common stock outstanding during the period. Diluted net loss per share attributable to common stockholders is calculated based on the weighted-average number of shares of the Company's common stock outstanding and other dilutive securities outstanding during the period. The potential dilutive shares of common stock resulting from the assumed exercise of outstanding stock options, warrants and the assumed conversion of preferred stock are determined under the treasury stock method. As of January 31, 2016, January 31, 2015 and December 31, 2014, 5,741,000, 9,793,000 and 9,713,000 potentially dilutive securities, respectively, were excluded from the computation of diluted loss per share because their effect on net loss per share would be anti-dilutive.
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies These unaudited interim condensed consolidated financial statements and accompanying notes should be read in conjunction with the Company’s annual financial statements and notes thereto contained in the Annual Report on Form 10-K for the fiscal year ended January 31, 2016. There have been no significant changes in the Company’s significant accounting policies for the three months ended July 31, 2016, as compared to the significant accounting policies described in the Annual Report on Form 10-K for the fiscal year ended January 31, 2016.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, Leases, which requires entities to recognize assets and liabilities for leases with lease terms greater than twelve months. The new guidance also requires quantitative and qualitative disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. The standard is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted upon issuance. The Company is in the process of evaluating the impact of adoption on its consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Compensation — Stock Compensation: Improvements to Employee Share-Based Payment Accounting, which relates to the accounting for employee share-based payments. This standard provides guidance on simplifying several aspects of the accounting for employee share-based payment transactions, including the income tax consequences, accounting for forfeitures and classification of excess tax benefits on the statement of cash flows. This standard will be effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company is in the process of evaluating the impact of adoption on its consolidated financial statements. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which addresses certain implementation issues that have surfaced since the issuance of ASU No. 2014-09 in May 2014. ASU No. 2016-10 provides guidance in identifying performance obligations and determining the appropriate accounting for licensing arrangements. This standard will be effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is in the process of evaluating the impact of adoption on its consolidated financial statements. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. ASU No. 2016-12 will affect all entities that enter into contracts with customers to transfer goods or services that are an output of the entity’s ordinary activities in exchange for consideration. The amendments in this update affect the guidance in ASU No. 2014-09 which is not yet effective. The amendments in this update also affect narrow aspects of Topic 606 including among others: assessing collectability criterion, noncash consideration, and presentation of sales taxes and other similar taxes collected from customers. The effective date of this update is the same as ASU No. 2014-09. The Company is in the process of evaluating the impact of adoption on its consolidated financial statements.	Recent Accounting Pronouncements In July 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2015-11, Inventory (Topic 330), Simplifying the Measurement of Inventory, which applies to all inventory except that which is measured using last-in, first-out (LIFO) or the retail inventory method. Inventory measured using first-in, first-out (FIFO) or average cost is included in the new amendment. The amendment will take effect for public business entities for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company is in the process of evaluating the impact of adoption on the its consolidated financial statements. In August 2015, FASB issued Accounting Standards Update No. 2015-14, Revenue from Contracts with Customers (ASU No. 2014-09). This update defers the effective dates of ASU No. 2014-09 (originally issued in June 2014) for public business entities by one year, or until annual reporting periods beginning after December 15, 2017, including interim reporting periods within the reporting period. ASU No. 2014-09 gives entities a single comprehensive model to use in reporting information about the amount and timing of revenue resulting from contracts to provide goods or services to customers. The proposed ASU, which would apply to any entity that enters into contracts to provide goods or services, would supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. Additionally, the update would supersede some cost guidance included in Subtopic 605-35, Revenue Recognition—Construction-Type and Production-Type Contracts. The update removes inconsistencies and weaknesses in revenue requirements and provides a more robust framework for addressing revenue issues and more useful information to users of financial statements through improved disclosure requirements. In addition, the update improves comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets and simplifies the preparation of financial statements by reducing the number of requirements to which an entity must refer. The Company is continuing to review the provisions of this ASU to determine if there will be any impact on its results of operations, cash flows or financial condition. In February 2016, FASB issued ASU No. 2016-02, Leases, which requires entities to recognize assets and liabilities for leases with lease terms greater than twelve months. The new guidance also requires quantitative and qualitative disclosures regarding the amount, timing and uncertainty of cash flows arising from leases. The standard is effective for annual and interim periods beginning after December 15, 2018, with early adoption permitted upon issuance. The Company is in process of evaluating the impact of adoption on its consolidated financial statements. In August 2014, FASB issued ASU No. 2014-15, Presentation of Financial Statements—Going Concern (Subtopic 205-40). This ASU provides guidance to determine when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of an entity's ability to continue as a going concern within one year of the date that the financial statements are issued. An entity must provide certain disclosures if conditions or events raise substantial doubt about the entity's ability to continue as a going concern. This standard is effective for annual periods ending after December 15, 2016. The Company is evaluating the impact of the adoption of this ASU on its consolidated financial statements. The Company has reviewed other recent accounting pronouncements and concluded they are either not applicable to the business, or no material effect is expected on the consolidated financial statements as a result of future adoption.

Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory.