Learn Swedish: Jag smörjer alltid in mig på benen med lotionen.

This is the standard Swedish way to describe actions done to your own body. Instead of using a possessive pronoun, you use a reflexive pronoun (mig), followed by a preposition indicating where (på), and finally the body part in its definite form (benen). It literally means 'I rub myself on the legs'.

What is the rule for the word order with smörjer, alltid, and in?

The base verb is the particle verb smörja in (to apply lotion or rub in). In a main clause, a sentence adverb like alltid must come right after the conjugated verb (smörjer). The verb particle (in) is placed after the adverb, giving us the order: Verb + Adverb + Particle.

Why is the preposition på used with benen in this reflexive structure?

The choice of preposition depends on the physical shape of the body part. For broad exterior surfaces like the legs, arms, or back, Swedish uses på. You would instead use i for openings or cavities (like the mouth) and om for parts you wrap around or encompass (like the neck or hands).

Why is lotionen in the definite form when the English translation just says 'lotion'?

When referring to everyday items, substances, or tools used in a personal routine, Swedish strongly prefers the definite form to show you mean the specific product you normally use. English often leaves this generic and indefinite.