bath salts
The Spanish term 'sales de baño' directly translates to 'bath salts' in English. They are a type of designer drug that are often disguised as actual bath salts. They can come in powder, crystal, or liquid form. The compounds found in these 'bath salts' are similar to naturally occurring substances like salt, but they have been chemically modified to produce similar effects as drugs. The term 'sales de baño' might also refer to a product used in bathing for moisture absorption and skin relaxation.
I have bought some bath salts and will use them tonight.
The speaker is indicating that they have recently purchased some bath salts. They also express their intent to use them later in the evening, suggesting that they plan to take a bath.
Juan, can you add these bath salts to the water?
The speaker is asking Juan to put the indicated bath salts into the water. It’s most likely that they are preparing a bath and want to enhance their bathing experience with the use of bath salts.
Bath salts can have relaxing aromas.
In this case, the speaker is discussing a feature of bath salts, which is their ability to have soothing scents. They are implicitly suggesting that bath salts can be used to create a relaxing environment, possibly during a bath.