Sale director of rugby Steve Diamond admitted his team was "beaten by a better side" after the Scarlets ran out 28-11 winners on Saturday.
The loss at Parc y Scarlets was a disappointing start to the Sharks' Champions Cup campaign, with Toulon at home their next assignment.
Gareth Davies and DTH van der Merwe (2) scored the Scarlets tries while Neil Briggs crossed for Sale as Diamond reflected on the negative.
"I think overall we were beaten by a better side on the night," he told Press Association Sport.
"The first-half performance, we got a kick charged down (that led to a Scarlets try), and a bit of indiscipline, and they built a handsome lead.
"Overall, no complaints. They were better than us tonight.
"We do well most years to get into this competition, and we are a good side at home and it will only be a fool that takes us lightly up there.
"Not withstanding that, we've got a six-day turnaround before facing Toulon, but maybe some of our injured players will come fit in the week."
He added: "We will build for Toulon now. I think we have sold eight or nine thousand tickets already, and hopefully we can give them a run for their money.
"The Scarlets are a good side. Their back-line just had a little more edge about them tonight, but apart from that, it was two equal teams for most of the game."