Influencer, 22, left with second

An influencer suffered second-degree burns after attempting to prepare coffee in her Stanley cup. 

Larissa Carvalho, from Sao Paulo, Brazil, recounted the painful experience in a series of videos that have reached millions of viewers online in a bid to warn others.

The 22-year-old explained that she tried to make coffee directly in the popular thermal cup for convenience, but was surprised when she saw an explosion of boiling water.

She recalled: 'As soon as the water touched my skin, it formed a blister that burst instantly.'

The incident allegedly occurred on February 25, when she was with her boyfriend at a property in the coastal town of Guaruja.

Larissa Carvalho attempted to make coffee in a Stanley cup when it exploded and injured her 

Larissa, from Brazil, is pictured showing the burn to her followers online and has been updating them on the treatment 

The burn was classed as second-degree at the hospital and has left a scar on her hand 

The couple were preparing to go to a football match when the accident happened. Larissa said: 'In a rush, I went to make coffee and put the kettle on the stove to heat the water.

'Then, I took the filter, one of those traditional Brazilian plastic ones, and placed it on top of the Stanley cup.'

The digital creator said that she used a small cup from the brand, and it remained intact after the accident.

She explained: 'It took a while and then there was an explosion with water, coffee, everything flying.'

Stanley water bottles have exploded in popularity over the last year, garnering 50 million views on TikTok

According to Larissa, the water hit various parts of her body, but only her arm was burned. She said: 'The skin bubbled up instantly.

'My immediate reaction was to think it wasn't anything serious until I realised the pain was unbearable and wasn't subsiding.'

After asking for help from her partner who was at the house, the young woman decided to put the wound under running water.

However, she did not see improvement, and her partner urged her to get medical assistance. The pair then headed to a hospital, where her injury was reportedly classified as a second-degree burn.

The couple were preparing to go to a football match when it happened and Larissa's boyfriend took her to the hospital 

Larissa said as soon as the water touched her skin, it formed a blister that 'burst instantly'

A second-degree injury affects the outer and underlying layers of the skin

The digital creator said that she used a small cup from the brand, and it remained intact after the accident

A chemical engineer said the burn could have been caused by wear and tear on the cup or by a defect in its manufacturing. Pictured:Left, the burn when it happened, right, in it's healing stages

Larissa chats to her followers and gives them an update in a TikTok video 

She said: 'The time between being at home until arriving at the hospital and receiving medication was horrible.'

After the episode, Larissa Carvalho made several videos recounting the incident.

How to treat a burn 

According to the NHS, you should follow this first-aid advice to treating a burn or scald.

• Immediately get the person away from the heat source
• Remove any clothing or jewellery that's near the burnt area of skin
• Do not move anything that's stuck to the skin
• Cool the burn with cool or lukewarm running water for 20 to 30 minutes
• Make sure the person keeps warm by using a blanket
• After cooling the burn, cover the burn by placing a layer of cling film over it 
• Use painkillers such as paracetamol or ibuprofen to treat any pain
• Raise the affected area if possible – this helps to reduce swelling
• If it's an acid or chemical burn, dial 999, carefully try to remove the chemical and any contaminated clothing, and rinse the affected area using as much clean water as possible

 Source: NHS 

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Dermatologist Geisa Costa explained that burns are classified into three degrees, based on the severity of the injury and the depth of tissue damage.

Characterised by redness, pain, and swelling, first-degree burns affect only the outer layer of the skin, called the epidermis.

Meanwhile, a second-degree injury affects the outer and underlying layers of the skin. The specialist explained: 'It can cause blisters, intense redness, pain, and swelling.'

Third-degree burns affect all layers of the skin and can cause damage to nerves, muscles, and bones, the doctor added.

Larissa reported the incident to Stanley but claimed she did not receive a response and added that she believed it was just an accident.

Elio Lopes Santos, a chemical engineer specialising in industrial and occupational safety, explained what could have caused the explosion.

He said the problem could have been caused by wear and tear on the cup or by a defect in its manufacturing.

However, the accident may have occurred due to a phenomenon.

Santos said: 'She may have poured coffee powder over the water, forming a plug. The water boiled and formed steam, which was suddenly expelled, as if it were a champagne opening. This phenomenon is called 'boil over.''

In a statement, Stanley confirmed it was contacted by the consumer and tried to contact her twice, by email and phone, but received no response.

However, the brand said it will continue to seek feedback and is available to the customer.

Stanley said: 'The product used is part of the bar line and can be used with hot beverages, but it is not recommended to strain coffee directly into it, as was done, as it was not designed to be used in this way.'